A school claims that its instructors average 12.4 years of experience. In a study of 15 instructors, the average experience was 11.8 years. The standard deviation of the sample was 2. a = .10 , is the number of years’ experience of the instructors less than the school claims? A. What are the null and alternative hypotheses for this test? B. How many tails? If one which direction? C. What is the test statistic? D. What is (are) your critical value(s)? or what is the P-value?

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