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# Hypothesis testing

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At Western University the historical mean of scholarship examination scores for freshman applications is 900. A historical population standard deviation &#963; = 180 is assumed known. Each year, the assistant dean uses a sample of applications to determine whether the mean examination score for the new freshman applications has changed.

a. State the hypotheses.

b. Using the scores for a sample of applicants in the attached file named Applicant, compute a 95% confidence interval estimate of the population mean examination score for the new freshman class.

c. Use the confidence interval to conduct a hypothesis test. Use a = .05. What is your conclusion?

d. What is the p-value?

##### Solution Summary

This provides an example of hypothesis testing including confidence interval and p-value.

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##### Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.