Solved: For Exercises 1 through 13, perform each of the
Chapter 8, Problem 13(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.Ages of U.S. Senators The mean age of Senators in the 109th Congress was 60.35 years. A random sample of 40 senators from various state senates had an average age of 55.4 years, and the population standard deviation is 6.5 years. At a 0.05, is there sufficient evidence that state senators are on average younger than the Senators in Washington?
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