1. A two-tailed test of hypothesis was conducted and 60 values were above the median. Computed
z = 1.61. At the 0.05 level, what is the decision regarding the null hypothesis?
A) Reject it
B) Fail to reject it
C) Neither reject it nor fail to reject it
D) None of the above
Solution
2-tail critical z- score is z = 1.96 Since the computed z- score 1.61 < 1.96, we fail
to reject the null hypothesis Answer: Fail to reject the null hypothesis.