Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollstercontacts 103 people in the 18-21 age bracket and finds that 87 of them respond and 16 refuse to respond.When 267 people in the 22-29 age bracket are contacted, 235 respond and 32 refuse to respond. Assume that1 of the 370 people is randomly selected. Find the probability of getting someone in the 22-29 age bracket orsomeone 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) =

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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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Suppose you want to find out how many people support Policy X. A standard polling approach is to just ask N many people whether or not they support Policy X, and take the fraction of people who say yes as an estimate of the probability that any one person supports the policy. Suppose that the probability someone supports the policy is p, which you do not know. Let pn be the number of people polled who supported the policy, divided by the total number of people polled N.
Pollsters are concerned about declining levels of cooperation among persons contacted in surveys.A pollster contacts 94 people in the 18-21 age bracket and finds that 80 of them respond and 14 refuse to respond.When 285 people in the 22-29 age bracket are contacted,265 respond and 20 refuse to respond.Assume that 1 of the 379 people is randomly selected .Find the probability of getting someone in the 22-29 age bracket or someone who does not respond.Report the answer as a percent rounded to one decimal place accuracy. P(22-29 or does not respond)=
Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=964 and x = 540 who said "yes." Use a 95% confidence level.
A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n = 1026 and x = 520 who said “yes." Use a 95% confidence level. Find the best point estimate of the population proportion p
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) =
Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 88 people in the 18-21 age bracket and finds that 75 of them respond and 13 refuse to respond. When 292 people in the 22-29 age bracket are contacted, 270 respond and 22 refuse to respond. Assume that 1 of the 380 people is randomly selected. Find the probability of getting someone in the 18-21 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. P(18-21 or agreed) = (Hint: It might be helpful to organize the data into a table first.)
Based on a smartphone survey, assume that 57% of adults with smartphones use them in theaters. In a separate survey of 264 adults with smartphones, it is found that 149 use them in theaters. a. If the57% rate is correct, find the probability of getting 149 or fewer smartphone owners who use them in theaters. b. Is the result of 149 significantly low?
Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 86 people in the 18-21 age bracket and finds that 73 of them respond and 13 refuse to respond. When 285 people in the 22-29 age bracket are contacted, 258 respond and 27 refuse to respond. Assume that 1 of the 371 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. P(22-29 or agreed) =
Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 93 people in the 18-21 age bracket and finds that 79 of them respond and 14 refuse to respond. When 266 people in the 22-29 age bracket are contacted, 237 respond and 29 refuse to respond. Assume that 1 of the 359 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. P(22-29 or agreed) = (Hint: It might be helpful to organize the data into a table first.) Submit Question
The proportion of Australian males that are colour-blind is 8.0 percent while the proportion of females is 0.4 percent. Calculate the odds ratio for males to females with respect to colour-blindness and comment.
Please explain . Thank you.
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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