Learning Check, hypothesis testing

1. How would you test the hypothesis that a new employee incentive program really works?

a. Try to disprove the hypothesis that it
works.

b. Try to prove the hypothesis that it does
work.

c. Try to disprove the hypothesis that it
doesn't work.

d. Try to prove the hypothesis that it
doesn't work.

2. How do you determine whether or not to reject the null hypothesis? Check to see if:

a. the __Z __score for the statistic is < -1 or >
+1.

b. the critical __Z __score is > +1.96 or < -1.96.

c. the __Z __score of statistic is more extreme
than the critical __Z __score

d. the __ Z __score of the standard error exceeds
the standard deviation of the sample.

3. A one-tailed test is especially associated with

a. the research hypothesis.

b. the null hypothesis.

c. a nondirectional hypothesis.

d. a directional hypothesis.

4. How is the significance level of a hypothesis test that supported the research hypothesis typically reported?

a. __p __= 5%.

b. __p __> .05.

c. __p __< .05.

d. All are common.

Answers below:

1. c

2. c

3. d

4. c