For Exercises 21–30, perform the test for using level of significance a by doing the following steps:

  1. State the hypotheses and the rejection rule.
  2. Calculate .
  3. Find the -value.
  4. State the conclusion and the interpretation.

Question 9.133

27.

9.3.27

(a) . We will reject if the . (b) (c) (d) The is not . Therefore we do not reject . There is insufficient evidence at level of significance that the population mean is not equal to 10.