a high school randomly selected 75 of the 200 seniors

needs to be greater than or equal to ten and so let's ncdu: What's going on with this second size column? Here, we want to calculate the probability that a student selected is a senior student or one that drives to school. Sal was doing the 160*0.15 calculation. The best answers are voted up and rise to the top, Not the answer you're looking for? of our sampling distribution of our sample proportions is For this problem: After you are in 2nd DISTR, arrow down to binomcdf. c. Construct a 99 % confidence interval for the population mean . d. Construct a 95% confidence interval for the population mean . A lacrosse team is selecting a captain. trailer << /Size 94 /Info 45 0 R /Root 48 0 R /Prev 248610 /ID[] >> startxref 0 %%EOF 48 0 obj << /Type /Catalog /Pages 44 0 R /Metadata 46 0 R /PageLabels 43 0 R >> endobj 92 0 obj << /S 321 /L 479 /Filter /FlateDecode /Length 93 0 R >> stream 10% of the sample would report that they experienced 5 16 01445 . !BS0B(-Hk=\Q]1gb``x*0aN @2Z2 @Q.-L`JH~-#S!0l.3#E@ )%G endstream endobj 93 0 obj 396 endobj 49 0 obj << /Type /Page /Parent 44 0 R /Resources 50 0 R /Contents [ 57 0 R 61 0 R 65 0 R 67 0 R 71 0 R 75 0 R 77 0 R 79 0 R ] /MediaBox [ 0 0 612 792 ] /CropBox [ 0 0 612 792 ] /Rotate 0 >> endobj 50 0 obj << /ProcSet [ /PDF /Text ] /Font << /TT2 51 0 R /TT3 68 0 R /TT4 52 0 R /TT6 58 0 R /TT8 62 0 R /TT9 73 0 R >> /ExtGState << /GS1 83 0 R >> /ColorSpace << /Cs6 55 0 R >> >> endobj 51 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 148 /Widths [ 250 333 408 500 500 833 0 0 333 333 0 564 250 333 250 278 500 500 500 500 500 500 500 500 500 500 278 278 564 564 564 444 0 722 667 667 722 611 556 722 722 333 0 722 611 889 722 722 556 0 667 556 611 722 722 944 722 722 0 333 0 333 0 500 0 444 500 444 500 444 333 500 500 278 278 500 278 778 500 500 500 500 333 389 278 500 500 722 500 500 444 0 0 0 0 0 0 0 0 0 0 0 0 0 333 0 0 0 0 0 0 0 0 0 333 444 444 ] /Encoding /WinAnsiEncoding /BaseFont /KAEEMN+TimesNewRoman /FontDescriptor 54 0 R >> endobj 52 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 150 /Widths [ 250 0 0 0 0 833 0 0 333 333 0 0 250 333 250 0 500 500 500 500 500 500 500 500 500 500 333 333 0 675 0 0 0 611 611 667 722 0 611 0 0 333 0 0 0 833 667 0 0 0 611 500 556 0 0 833 611 556 0 0 0 0 0 0 0 500 500 444 500 444 278 500 500 278 278 444 278 722 500 500 500 0 389 389 278 500 444 667 444 444 389 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 556 556 0 500 ] /Encoding /WinAnsiEncoding /BaseFont /KAEEOO+TimesNewRoman,Italic /FontDescriptor 53 0 R >> endobj 53 0 obj << /Type /FontDescriptor /Ascent 891 /CapHeight 656 /Descent -216 /Flags 98 /FontBBox [ -498 -307 1120 1023 ] /FontName /KAEEOO+TimesNewRoman,Italic /ItalicAngle -15 /StemV 83.31799 /XHeight 0 /FontFile2 86 0 R >> endobj 54 0 obj << /Type /FontDescriptor /Ascent 891 /CapHeight 656 /Descent -216 /Flags 34 /FontBBox [ -568 -307 2000 1007 ] /FontName /KAEEMN+TimesNewRoman /ItalicAngle 0 /StemV 94 /XHeight 0 /FontFile2 82 0 R >> endobj 55 0 obj [ /ICCBased 85 0 R ] endobj 56 0 obj 614 endobj 57 0 obj << /Filter /FlateDecode /Length 56 0 R >> stream He interviews a simple random sample of 50 of the 200 seniors on campus. 0000011697 00000 n How can i calculate the probability value without calculator? B. Instead, you could select more schools, get a list of all Grade 11 students from these selected schools and select a random sample of Grade 11 students from each school. The histogram below displays their answers. have here and it is a rule of thumb, is that if we take if they have experienced extreme levels of stress You want to see if the captains all play the same position. Thus, the chance of obtaining a sample with less than 15% seniors is about 3.6%--not very likely. Each of her classes . Rewrite each of the following sentence, filling in the blank with a conjunctive adverb that makes the sentence meaningful. close those parentheses and so what is this going to give me? Thus, there were 140/2 = 70 juniors and 140 - 70 = 70 seniors. way larger than ten so that checks out and so the sampling He broke 0.15 into 0.1 and 0.05, so he had 0.1*160=16 and 0.05*160=8, What is the difference the binomial distribution and sampling ditribution? Using the sample data, the researcher estimated that 23% of the students in the population saw a movie at least once per month. Answers to Sample Exam 3 - Chandler Unified School District 0000002096 00000 n Which of the following is the most appropriate conclusion about all students at the university, based on the given estimate and margin of error? To save chart as picture, move your mouse over the graph, until a small camera icon appear. Multistage Sample. HT;o0+40A=phnAb$%(A$E~GJF"q|""l ,]/fGlx]?^x8`-PkIb jYl]KT$P!K'-+I7w}^CE2% Join Manhattan Prep instructor Jamie Nelson and mbaMission as she explain the key differences among the exams and how business schools view each testand help you determine which one may be best for you. Pryor, John H., Linda DeAngelo, Laura Palucki Blake, Sylvia Hurtado, Serge Tran. This violates the condition of independence. Interpret the confidence interval. Complete the partially spelled residence word. He asks a randomly selected group of 200 parents whether or not they use cloth diapers. Suppose that you randomly pick eight first-time, full-time freshmen from the survey. extreme levels of stress during the past month, In each of her 5 classes she randomly selected 10 students and asked them how many days they come to campus for classes. Dolores recently enrolled in a retirement plan. 0000009917 00000 n Free 1-week access to over 20 lesson videos and 20 practice questions. 0000005404 00000 n for system administration and to provide you a personalized ad experience. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 0000010603 00000 n Select all of the statements that are true. **SAMPLE** A buildings design affects the way people conduct their daily lives; ________, architects must know as much about life as they do about art.\ The mean grade point average (GPA) of the seniors selected was 2.85, and the standard deviation was 0.4. 47 0 obj << /Linearized 1 /O 49 /H [ 1380 509 ] /L 249678 /E 128857 /N 8 /T 248620 >> endobj xref 47 47 0000000016 00000 n the true proportion for our population is 0.15, what is Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Suppose you choose a random sample of 80 shots made by DeAndre during the 2013 season. Available online at. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Direct link to pankaj3856's post How can i calculate the p, Posted 5 years ago. \(X\) takes on the values 0, 1, 2, , 20 where \(n = 20, p = 0.41\), and \(q = 1 0.41 = 0.59\). 2X^1j$\ +64|0E8{e' N=h5ue)EogfWGx_?qO",u}AUzo]eRl?N;7ELX;OF:Q' SnlIqJ The probability that you win any game is 55%, and the probability that you lose is 45%. you'll need a calculator for that, unless you're good at finding square roots with a pencil and paper. Enter right over here, and then Enter, there we have The state health board is concerned about the amount of fruit available in school lunches. The probability of a success is \(p = 0.55\). Here are the scores of 16 randomly selected statistics students on a test on Unit 3 and on the Here are the scores of 16 randomly selected statistics students on a test on Unit 3 and on the final exam. 0000010582 00000 n If a person is selected at random, what is the probability that it is a teacher or a student? D) It is plausible that the percentage of students who see a movie at least once per month is between 19% and 27%. There are a fixed number of trials. 0000128447 00000 n What is the median number of shark attacks over these states? Stratified sampling- she puts 50 into categories: high achieving smart kids, decently achieving kids, mediumly achieving kids, lower poorer achieving kids and clueless . AP Chemistry Practice Exam From the 2 016 Administration NOTE: This is a modified version of the 2016 AP Chemistry Exam. bell curve for a normal distribution, so something like this. of our sampling distribution? Probability Venn Diagram: Class of 100 students; Violin and Piano, Probability of student passed exam, selected at random from students who attend lecture or do not attend lectures, Probability that a student passed the probability and statistics exam. Probability : In a class of 125 students 70 passed in Mathematics , 55 in Statistics and 30 in both. Three characteristics of a binomial experiment, The outcomes of a binomial experiment fit a binomial probability distribution. A fair, six-sided die is rolled ten times. the mean number of siblings for the randomly selected students. Direct link to Vyome's post what happen's when a dist, Posted 5 years ago. Press ENTER. I'll say 0.10 and so the probability that in The random variable \(X =\) the number of successes obtained in the \(n\) independent trials. Washington High School randomly selected freshman, sophomore, junior, and senior students for a survey about potential changes to next years schedule. Data reported in this paper are drawn from The American College Testing Program (ACT) files of student records collected over the five year period from 1970-71 to 1974-75 through administration of the ACT Assessment Program. In words, define the random variable \(X\). A research assistant randomly selected 75 undergraduate students from the list of all students enrolled in the psychology-degree program at a large university. Now what is our mean well The mean reading time in the sample was 89 minutes, and the margin of error for this estimate was 4.28 minutes. Out of 20 attempts, you want to find the probability that the dolphin succeeds 12 times. P over N which is equal to the square root of 0.15 At the very least you will need a table of the cumulative standard normal probability distribution. see this is going to be 16 plus eight which is 24 and Let A be the event that the selected student is a student athlete, and let B be the event that the selected student drives to school. sampling distribution of our sample proportions and first Let \(X\) = the number of American adults out of a random sample of 50 who prefer saving to spending. Each roll is independent. Use your calculator to find the probability that DeAndre scored with 60 of these shots. Many Northerners _ _grate to Florida in the winter. But hopefully this is helpful. Occasionally, students leave their USB drive in a computer. Official SAT Practice Test 9, Section 4, Question 10:Washington High School randomly selected freshman, sophomore, junior, and senior students for a survey a. The probability of a student on the second draw is \(\dfrac{5}{15}\), when the first draw selects a student. To answer that question must be used the values on the x axis and NOT those on the y axis. $5_!9}:|I~ -7 This means that for every true-false statistics question Joe answers, his probability of success (\(p = 0.6\)) and his probability of failure (\(q = 0.4\)) remain the same. (objective) in the blank. What is the z-score for a sample mean of 76? Cluster sampling must use a random sampling method at each stage. 0000004668 00000 n 2 12 8 . If 30 students are selected at random, find the probability that at most 14 of them participate in a community volunteer program outside of school. we already know that's 0.15. The \(n\) trials are independent and are repeated using identical conditions. There are lots of these on the web. This implies that 52% do not. 0000003445 00000 n a sample of 160 you get a proportion for that sample, 0000009279 00000 n A group of 50 individuals who have taken the drivers exam is randomly selected. 2. Another way of saying this is that for each individual trial, the probability, \(p\), of a success and probability, \(q\), of a failure remain the same. What is all individuals, objects, or measurements whose properties are being studied? 13) In a large high school of 2500 students, the mean number of cars owned by students' families is 2.35 with a standard deviation of 1.06. 160, the true population proportion is 0.15 and that If the sample of 16 adult females was chosen. Use your calculator to find the following probabilities: the probability that 25 adults in the sample prefer saving over spending, the probability that at most 20 adults prefer saving, the probability that more than 30 adults prefer saving. One student from a high school will be selected at random. d. Find the mode.e. the number of parents that use cloth diapers. The data from 1970-71 and 1971-72 represent a five percent random sample and the data from 1972-73, 1973-74, and 1974-75, a ten percent random sample of students tested on . Or the Health Department might issue RFPs The names of all the seniors are put into a hat, and the first three that are drawn will be the captains. The probability that at most 12 workers have a high school diploma but do not pursue any further education is 0.9738. A is the answer. You want to find the probability of rolling a one more than three times. Estimate the sample mean. What is the population? The mean grade point average (GPA) of the seniors selected was 2.85, and the standard deviation was 0.4. So first this first part, Suppose Joe always guesses correctly on any statistics true-false question with probability \(p = 0.6\). This is not binomial because the names are not replaced, which means the probability changes for each time a name is drawn. 24 is indeed greater than or equal to ten so that deviation and create a normal distribution that has that same 0000003976 00000 n A simple random sample of 36 students is taken and the mean number of cars owned is calculated. Well it's approximately 0.028 163.4. Direct link to Parthiban Rajendran's post But if we know the true p, Posted 5 years ago. In a sample of. HT1)cli%c'vTYc .>qR'yI| be 24 less than 160 so this is going to be 136 which is B) At least 23%, but no more than 25%, of the students see a movie at least once per month. @LEb+5\:/|Kfur}q 32WqrM!1{ w!R4 X8 \&=@j=Nc[mkqaUOq{mKoI-h#)DWJ`}GjTh|)\vtxR9b~\L ]K'& c^,uhdS_HBLp:C#|N5m $CZBDQ _+ You are interested in the number that believes that same sex-couples should have the right to legal marital status. This is a paper/pencil copy of a onlin thology enhancd iterin A high school randomly selected 75 of the 200 seniors at the school to take a sample college entrance exam. Find the mean to the nearest cent. the mean number of siblings for all students in the school. %PDF-1.5 % Given the frequency table, what is the mean? My approach : Let n(M) = 70 ( students passed in mathematics) ; n(S) = 55 ( students passed in Statistics) ; n(M $\cap S) = 30.$ Therefore, probability of students passed in mathematics = $\frac{70}{125}; $ Then find the probability that a student selected at random from the class has passed in only one subject . This is a great example of response bias because no student (or at least no intelligent student) will admit to a cop Further research suggests that the population mean score on this test for high school seniors is. 10% of the sample replied "yes" to the question. exam you actually should write this you should say, you if you can answer it on your own and there are four Students are selected randomly. The words "at least" translate as what kind of inequality for the probability question \(P(x\) ____ \(40\)). to select the best contractor for providing substance abuse counseling in the Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. How would I do this if I were to standardize the distribution? What is the statistic in this experiment? times 0.85 all of that over our sample size 160, so now Note: these settings will only apply to the browser and device you are currently using. In Example 5, a cluster sample would choose 100 schools and then interview every Grade 11 student from those schools. Direct link to Jing Qian's post Figure out how many stand, Posted 5 years ago. View Unit 3 Multiple Choice Sample Questions from ECON 105 at Sacred Heart Academy. Find the mode of the following number of safety pins found by each participant during a scavenger hunt. k-gX0Yy-TVA`I 3 j5j7Y@[K$k[GVsM6hMFrK-yXW8O|}owht($|SlrOsu^,r5L'-"^vy>v]`*HrMownJ4j ZFWZg:cy''Q0X~3>#Em6 + px1K_ g/GG?E} 0 z And so what is my lower bound? Of students selected for the survey, 1/4 were freshmen and 1/3 were sophomores. A) Selecting one of the 50 stores at random and then surveying each employee at that store, B) Selecting 10 employees from each store at random and then surveying each employee selected, C) Surveying the 25 highest-paid employees and the 25 lowest-paid employees, D) Creating a website on which employees can express their opinions and then using the first 50 responses. 1190. and the standard deviation was. Let \(X\) = the number of workers who have a high school diploma but do not pursue any further education. A random sample of 300 students is selected from a large group of students who use a computer-equipped classroom on a regular basis. ^/B 9,1E;aY4m;-o':lo=6g#>~4o-R*+23)Lk@E1mqUgVLvL)3mRcL]) 2SX3R2umOcpfr8\1^G6 (J)+;;o>}>&sJ1t!)^3Pdc91>G|VUY6/h.$#|G[(#Z& "Bx$ W]0!hfc8 in in your normal CDF function, but if we click @i,Y~Pl)"2?D*nJ:8l=J!=;!*n +P8 JkORBuNn!g9[+c{PQ Ii,|+*q(U;qN80rZiraW^q/.'k} ZH&WB-aY_;(,@qC 3dM$$Zd B,nC=tm5^Y|oX-^T!}nJZ [J8ct(Lka`yJT sO The standard deviation is the square root of (0.15 * 0.85 / 160) . Assuming the true proportion To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Mycollegehive is a participant in the IAB CCPA Compliance Framework for Publishers and Technology Companies. stratified 12. But I don't know how to differentiate if it is a binomial distribution or sampling distribution from the statement. standard deviation of 0.028, just so people know that you 0000005149 00000 n is greater than or equal to ten and our sample size times Theoretically Correct vs Practical Notation. And our normal distribution To calculate \(P(x \leq \text{value}): \text{binomcdf}(n, p, \text{number})\) if "number" is left out, the result is the cumulative binomial probability table. \(X =\) the number of successes in \(n\) independent trials, \(X\) takes on the values \(x = 0, 1, 2, 3, \dotsc, n\), \(p =\) the probability of a success for any trial, \(q =\) the probability of a failure for any trial. 1/3 were sophomores. Most of the entries in the NAME column of the output from lsof +D /tmp do not begin with /tmp. the mean number of siblings for the randomly selected students. Take 2 tests from Prep Club for GRE. There are 15 math classes in 11th grade. For example, randomly guessing at a true-false statistics question has only two outcomes. 0000007924 00000 n \(X \sim B(n, p)\) means that the discrete random variable \(X\) has a binomial probability distribution with \(n\) trials and probability of success \(p\). III. approximately normal, is it approximately normal probability that they're asking for. The number of students that . than 0.10 just like that. . endstream endobj 50 0 obj <>stream distribution is just going to be our population proportion, Does Counterspell prevent from any further spells being cast on a given turn? He records the heights of 100 randomly selected students attending the college. Now, the corrected z value is z = ( x - )/ = (605 - 500)/100 = 105/100 = +1.05. 0000011226 00000 n What is the probability that the chairperson and recorder are both students? Of the 300 students questioned, 180 said that they write their name on their USB drive. Direct link to Kaitlyn Anderson's post How we would solve this i, Posted 4 years ago. Available online at, NBA Statistics 2013, ESPN NBA, 2013. 1011. How do you ensure that a red herring doesn't violate Chekhov's gun? Yeah I just saw the the one incomplete answer and didn't see the other, identical answer. Since this rule was invented by statisticians, it can't really be "proved." example, your town or city governments Public Works Department might Twenty questions will be loaded at random each time you attempt this review activity. { "4.01:_Prelude_to_Discrete_Random_Variables" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "4.02:_Probability_Distribution_Function_(PDF)_for_a_Discrete_Random_Variable" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "4.03:_Mean_or_Expected_Value_and_Standard_Deviation" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "4.04:_Binomial_Distribution" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "4.05:_Geometric_Distribution" : "property get [Map 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"Bernoulli trial", "authorname:openstax", "showtoc:no", "license:ccby", "program:openstax", "licenseversion:40", "source@https://openstax.org/details/books/introductory-statistics" ], https://stats.libretexts.org/@app/auth/3/login?returnto=https%3A%2F%2Fstats.libretexts.org%2FBookshelves%2FIntroductory_Statistics%2FBook%253A_Introductory_Statistics_(OpenStax)%2F04%253A_Discrete_Random_Variables%2F4.04%253A_Binomial_Distribution, \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}}}\) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash{#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\). 11 different elementary schools in the local school district: Obtain a Simple Random Sample: 500 people from each of the 4 time zones: 5 athletes from each of the 26 PSU teams: 20 students from each of the 11 elementary schools: Sample: 4 500 = 2000 selected people: 26 5 = 130 selected athletes: 11 20 = 220 selected students And our standard deviation The mean, \(\mu\), and variance, \(\sigma^{2}\), for the binomial probability distribution are, The standard deviation, \(\sigma\), is then. 7$z]ib:@#6jDgeggz"N9Z#zy%ywf3\Ns~=0(Z}ew3Hhpe}37q 8_k`,FOhq@g11VILLB39'TV2l~SxN9yUn9d;(Q]#?a{Lb_n76v=,JcN=^7fO ` Hb```f``Ma`c`Ied@ AV(0c#/)/z| .w( Xo*\;Ez.nTe7M&%~63dVWNgHuHgM>~AlcO};XG2ogk&~b``Rq ']: d Find the probability that $2$ are $1$st year and $5$ are $3$rd year. Quantity A is 12.3. State the probability question mathematically. Direct link to cd024's post Hi, is there a proof of t, Posted 5 years ago. 40 randomly selected undergraduate students from all degree programs at the college, C. 300 randomly selected undergraduate psychology-degree program students, D. 300 randomly selected undergraduate students from all degree programs at the college. -axis contains the probability of \(x\), where \(X =\) the number of workers who have only a high school diploma. When estimating normality of a sampling distribution do you use the SAMPLE PROPORTION (p=0.10) or POPULATION PROPORTION (p=0.15)? going to be equal to the square root of P times one minus Mycollegehive may collect information about your computer, including where available your geographic location, IP address, operating system and browser type, device type, bandwidth, etc. does the agency want to see covered in the proposals to solve the Then use the high school students in those classes as your sample. Suppose we randomly sample 200 people. - [Instructor] We're told Use them to identify criteria requested If 336 students were selected for the survey, how many were seniors? D. The probability that a randomly selected person age 50 of older has arthritis is .3. Let's see this is going to Thomas wants to estimate the mean height of students attending his college. How many students were polled? Official Answer and Stats are available only to registered users. None of the above. If 336 students were selected for the survey, how many were seniors? To ensure customer satisfaction, every 35th phone call received by customer service will be monitored. In other words, what factors Using the TI-83, 83+, 84 calculator with instructions as provided in, \(P(x = 25) = \text{binompdf}(50, 0.6, 25) = 0.0405\), \(P(x \leq 20) = \text{binomcdf}(50, 0.6, 20) = 0.0034\), \((x > 30) = 1 - \text{binomcdf}(50, 0.6, 30) = 1 0.5535 = 0.4465\), Standard Deviation \(= \sqrt{npq} = \sqrt{50(0.6)(0.4)} \approx 3.4641\), Use your calculator to find the probability that at most eight people develop pancreatic cancer. If you clear cookies or if your browser blocks cookies, your opt-out cookie may no longer be available. He surveys 125 randomly selected homeowners to determine whether or not they own dogs.

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