Pearson eText for Statistics for Psychology -- Instant Access (Pearson+)
6th Edition
ISBN: 9780137477968
Author: Arthur Aron, Elliot Coups
Publisher: PEARSON+
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Chapter 5, Problem 11PP
To determine
Elaborate the meaning of the 95% confidence interval to a person who understands hypothesis testing with the
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In a town with 5000 adults, a sample of 50 is selected using SRSWOR and asked their opinion of a proposed municipal project; 30 are found to favor it and 20 oppose it. If, in fact, the adults of the town were equally divided on the proposal, what would be the probability of observing what has been observed? Approximate using the Binomial distribution. Compare this with the exact probability which is 0.0418.
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Chapter 5 Solutions
Pearson eText for Statistics for Psychology -- Instant Access (Pearson+)
Ch. 5 - Prob. 1.1HDCh. 5 - Explain how you could create a distribution of...Ch. 5 - (a) Why is the mean of the distribution of means...Ch. 5 - Write the formula for the variance of the...Ch. 5 - (a) What is the standard error? (b) Why does it...Ch. 5 - A population of individuals that follows a normal...Ch. 5 - How is hypothesis testing with a sample of more...Ch. 5 - How do you find the Z score for the sample’s mean...Ch. 5 - A team of researchers predict that showing a...Ch. 5 - (a) What is the best estimate of a population...
Ch. 5 - (a) What number is used to indicate the accuracy...Ch. 5 - What is a 95% confidence interval?
Ch. 5 - A researcher predicts that showing a certain film...Ch. 5 - (a) Why is it wrong to say that the 95% confidence...Ch. 5 - Why is the standard deviation of the distribution...Ch. 5 - For a population that has a standard deviation of...Ch. 5 - For a population that has a standard deviation of...Ch. 5 - ADVANCED TOPIC: Figure the 95% confidence interval...Ch. 5 - ADVANCED TOPIC: Figure the 99% confidence interval...Ch. 5 - For each of the following samples that were given...Ch. 5 - For each of the following samples that were given...Ch. 5 -
Lee and colleagues (2000) tested a theory of the...Ch. 5 -
ADVANCED TOPIC: Christakis and Fowler (2007)...Ch. 5 - Under what conditions is it reasonable to assume...Ch. 5 - Indicate the mean and the standard deviation of...Ch. 5 - Figure the standard deviation of the distribution...Ch. 5 - ADVANCED TOPIC: Figure the 95% confidence interval...Ch. 5 - ADVANCED TOPIC: Figure the 99% confidence interval...Ch. 5 - For each of the following studies, the samples...Ch. 5 - For each of the following studies, the samples...Ch. 5 - A researcher is interested in whether people are...Ch. 5 - A psychologist is interested in the conditions...Ch. 5 - A government-sponsored telephone counseling...Ch. 5 -
Stankiewicz and colleagues (2006) examined how...Ch. 5 -
Maier and colleagues (2008) conducted a study to...
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