20Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollstercontacts 90 people in the 18-21 age bracket and finds that 76 of them respond and 14 refuse to respond. When254 people in the 22-29 age bracket are contacted, 232 respond and 22 refuse to respond. Assume that 1 ofthe 344 people is randomly selected. Find the probability of getting someone in the 18-21 age bracket orsomeone who refused to respond.Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol.P(18-21 or refused) =%3D(Hint: It might be helpful to organize the data into a table first.)Question Help: E Written Example Message instructorSubmit QuestionJump to Answer43,324MARétv2808.esc

Given : Making a table from given information in a question Respond Refuse to respond Total…

Answered: Pollsters are concerned about declining…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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23
The histogram below gives the length of service of members of the Department of English at a particular university. The classes, in years of service, are 0−−4.9, 5−−9.9, etc., and the vertical axis represents the number of faculty. 1) What percent of the department faculty have less than 15 years of service? 2) If a member of the department is chosen at random to serve on a university committee, what is the probability (in decimal form) that the chosen representitive will have between 5 and 45 years of service? 3) What is the probability the representative above will have less than 20 years of service given that the person has less than 25 years of service?
Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 95 people in the 18-21 age bracket and finds that 81 of them respond and 14 refuse to respond. When 260 people in the 22-29 age bracket are contacted, 235 respond and 25 refuse to respond. Assume that 1 of the 355 people is randomly selected. Find the probability of getting someone in the 22-29 age bracket or someone who responds.Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol.P(22-29 or responds) =
Based on a smartphone survey, assume that 43% of adults with smartphones use them in theaters. In a separate survey of 258 adults with smartphones, it is found that 110 use them in theaters. a. If the 43% rate is correct, find the probability of getting 110 or fewer smartphone owners who use them in theaters. b. Is the result of 110 significantly low?
Based on a smartphone survey, assume that 57% of adults with smartphones use them in theaters. In a separate survey of 224 adults with smartphones, it is found that 111 use them in theaters. a. If the 57% rate is correct, find the probability of getting 111 or fewer smartphone owners who use them in theaters.
In a recent poll of female college students, 70% stated that they plan to graduate with a STEM degree. A math teacher decides to randomly sample 15 female college students. A. Find the probability that exactly 6 out of the 15 plan to graduate with a STEM degree. B. Find the probability that between 5 and 9 (inclusive) out of the 15 plan to graduate with a STEM degree. C. Find the probability that at least 7 out of the 15 plan to graduate with a STEM degree. D. Find the expected number of female college students out of the 15 that plan to graduate with a STEM degree.
There are declining levels of cooperation among persons contacted in surveys and this brings concerns to pollsters. A pollster contacts 92 people in the 18-21 age bracket and finds that 78 of them respond and 14 refuse to respond. When 276 people in the 22-29 age bracket are contacted, 259 respond and 17 refuse to respond. Assume that 1 of the 368 people is randomly selected. Find the probability of getting someone in the 22-29 age bracket or someone who agreed to respond. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol. prob = Question Help: M Mes
A gender-selection technique is designed to increase the likelihood that a baby will be a girl. In the results of the gender-selection technique, 962 births consisted of 490 baby girls and 472 baby boys. In analyzing these results, assume that boys and girls are equally likely. a. Find the probability of getting exactly 490 girls in 962 births. b. Find the probability of getting 490 or more girls in 962 births. If boys and girls are equally likely, is 490 girls in 962 births unusually high?
The number of calls received by a mountain search and rescue team in a day has a mean of 0.70. Find the probability that on a randomly selected day, they will receive fewer than two calls. O a. 0.844 O b. 0.156 O c. 0.122 O d. 0.348
A national sports equipment co-op is going to conduct a survey of its members. It knows from collecting data when members join that 68% of them identify as male. Assuming the total number of members is very large and 200 of them are randomly selected to take the survey, what’s the chance less than 60% of these randomly chosen members identify as male? Show all your work and write your answer as a percentage.
based on the results of a poll, the probability of a random person liking ice cream is 0.84. suppose you flip a fair coin and ask a random person if they like ice cream. what is the probality that the person likes ice cream and the coin shows heads?
Based on a smartphone survey, assume that 51% of adults with smartphones use them in theaters. In a separate survey of 248 adults with smartphones, it is found that 110 use them in theaters. a. If the 51% rate is correct, find the probability of getting 110 or fewer smartphone owners who use them in theaters. b. Is the result of 110 significantly low? a. If the 51% rate is correct, the probability of getting 110 or fewer smartphone owners who use them in theaters is (Round to four decimal places as needed.) b. Is the result of 110 significantly low? v because the probability of this event is v than the probability cutoff that corresponds to a significant event, which is Question Viewer Enter your answer in the answer box. ? PAGES 1377 NOV W 14 MacBook Air DII 80 888 F10 F6 F7 F8 F3 F4 F5 %24 2 3 4 7 R T. Y く0 E.

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