(a) What is the value of ˆp, the sample proportion that say yes to the question?  (b) Check the conditions to determine whether you can apply the Central Limit Theorem (CLT) to find a confidence interval.  (c) Find the mean and standard error of the sampling distribution?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 7CR
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Question

A proportion, p, that many public opinion polls estimate is the number of Americans who would say yes
to the question, “If something were to happen to the president of the United States, do you think that the
vice president would be qualified to take over as president?” In one such random sample of 1022 adults,
388 said yes.
(a) What is the value of ˆp, the sample proportion that say yes to the question? 
(b) Check the conditions to determine whether you can apply the Central Limit Theorem (CLT) to find
a confidence interval. 
(c) Find the mean and standard error of the sampling distribution? 
(d) Find a 90% confidence interval for the population proportion that say yes to the question? 

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