A social scientist wishes to conduct a survey. She plansto ask a yes/no question to a random sample from theU.S. adult population. One proposal is to select 100 people; another proposalis to select 900 people.Which of the following is true regarding the sample proportion ô of "yes"responses?A. O The sample proportion from the sample of 900 is more likely to beclose to the true population proportion, p.B. The sample proportion from sample of 100 is more likely to beclose to the true population proportion, p.C. The sample proportion in either proposal is equally likely to beclose to the true population proportion, p, since the sampling israndom.

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Answered: A social scientist wishes to conduct a…

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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A sample of Reese's pieces contains the following: 23 Orange, 14 Brown, 18 Yellow. What is the proportion of orange? Round to two places
You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. how many randomly selected air passengers must you survey? assume that you want to be 90% confident that the sample percentage is within 3.5 percentage points of the true population percentage. Assume that nothing is known about the percentage of passengers who prefer aisle seats. n= Round to the nearest integer.
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sixty-five percent of those surveyed reply No to a certain question. If 234 reply No, what is the sample size?
A vaccine to prevent a severe virus was given to children within the first year of life as part of a drug study. The study reported that of the 3456bchildren randomly assigned the vaccine, 58 got the virus. Of the 1606 children randomly assigned the placebo, 46 got the virus. a. Find the sample percentage of children who caught the virus in each group. Is the sample percentage lower for the vaccine group, as investigators hoped? b. Determine whether the vaccine is effective in reducing the chance of catching the virus, using a significance level of 0.01.The first few steps of the hypothesis-testing procedure are given. Complete the procedure.
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From the given scenario, define the population proportion. In 2019, a national survey organization asked the question "Do you go on more than two vacations per year?" to a random sample of 2,000 Americans. 580 responded "Yes", while the other 1,420 people responded "No". Group of answer choices: A) the proportions of the sampled Americans who go on more than two vacations per year B) the proportion of all Americans who go on more than two vacations per year C) the 1,420 people who responded "No" D) the 2,000 Americans
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