Testing Hypotheses. In Exercises 9-24, assume that a simple random sample has been selected and test the given claim. Unless specified by your instructor, use either the P-value method or the critical value method for testing hypotheses. Identify the null and alternative hypotheses, test statistic, P-value (or
22. Brain Volume Listed below are brain volumes (cm3) of unrelated subjects used in a study. (Sec Data Set 6 in Appendix B.) Use a 0.01 significance level to test the claim that the population of brain volumes has a
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