For Exercises 27–32, assume that the populations are normally distributed. Perform the indicated hypothesis tests using the -value method. For each exercise,

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

Question 10.185

29.

10.4.29

(a) . Reject if the .

(b) (c) . (d) Since the is , we reject . There is evidence at the level of significance that the population standard deviation of Population 1 is less than the population standard deviation of Population 2.