For Exercises 37–48, use the hypotheses and data from the indicated exercises to perform the test for by doing the following steps:

  1. State the hypotheses.
  2. Find and state the rejection rule.
  3. State the value of from the indicated exercise.
  4. State the conclusion and the interpretation.

Question 9.82

47. Use from Exercise 19 and from Exercise 33

9.2.47

(a) (b) . Reject if or. (c) (d) is not and not . Therefore we do not reject . There is insufficient evidence at level of significance that the population mean differs from 2.5.