For Exercises 1 through 13, perform each of the following steps. a. State the hypotheses
Chapter 8, Problem 4(choose chapter or problem)
For Exercises 1 through 13, perform each of the following steps. a. State the hypotheses and identify the claim. b. Find the critical value(s). c. Compute the test value. d. Make the decision. e. Summarize the results. Use diagrams to show the critical region (or regions), and use the traditional method of hypothesis testing unless otherwise specified.Salaries of Ph.D. Students Full-time Ph.D. students receive an average salary of $12,837 according to the U.S. Department of Education. The dean of graduate studies at a large state university feels that Ph.D. students in his state earn more than this. He surveys 44 randomly selected students and finds their average salary is $14,445, and the population standard deviation is $1500. With a 0.05, is the dean correct?
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