What is the p-value and state the hypotheses

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Reference no: EM131456552

Question: At Western University the historical mean of scholarship examination scores for freshman applications is 900. A historical population standard deviation σ = 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. What is the 95% confidence interval estimate of the population mean examination score if a sample of 200 applications provided a sample mean = 935?

c. Use the confidence interval to conduct a hypothesis test. Using σ = .05, what is your conclusion?

d. What is the p-value?

Reference no: EM131456552

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