For Exercises 9–11, perform the indicated hypothesis test using the -value method. Answer (a)–(e) for each exercise.

  1. State the hypotheses and the rejection rule.
  2. Calculate .
  3. Calculate .
  4. Calculate the -value.
  5. Compare the -value with . State and interpret your conclusion.

Question 10.121

9. Test, at level of significance , whether .

Sample 1
Sample 2

10.3.9

(a) . Reject if . (b) . (c) . (d) (e) Since is , we reject . There is evidence at the level of significance that the population proportion of Population 1 is greater than the population proportion of Population 2.