The rejection region for testing H0: = 80 vs. H1: < 80, at ...

[jc611]

The rejection region for testing H0:  = 80 vs. H1:  < 80, at the 0.10 level of significance is:
 a. z > 1.96
  b. z < 0.90
  c. z > 1.28
  d. z < -1.28

Question 2

In a normal approximation to the Wilcoxon rank sum test, the standardized test statistic is calculated as z = 1.96 . For a two-tail test, the p-value of the test is 0.025.
  Indicate whether the statement is true or false

[akemokai]

Answer to Question 1

D

Answer to Question 2

T