6. Professional athletes are now commonly tested for steroid use following competition.It is known that there is some risk of sampling error, but this risk is believed to be minimal.What would constitute a Type II error on the part of the testing agency, if their null hypothesis is that the athlete is drug-free?

a.an athlete who is using steroids tests negative (drug-free)

b.an athlete who is using steroids tests positive (not drug-free)

c.an athlete who is not using steroids tests negative (drug-free)

d.an athlete who is not using steroids tests positive (not drug-free).

_____ 7. Whenever the null hypothesis is rejected, then

a.the alternative hypothesis must also be rejected

b.the alternative hypothesis is given more support

c.the alternative hypothesis must be tested separately

d.none of these, because the null hypothesis and the alternative hypothesis are mutually exclusive

_____ 8. If the null hypothesis is correctly rejected, then:

a. a Type I error has not been made

b. a Type II error has not been made

c. both A and B

d. neither A or B since it is possible to correctly reject the null and still make both a

Type I and a Type II error.

_____ 9. The research (alternative) hypothesis is:

a. the hypothesis that states 'no difference, or no relationship is expected'

b. the hypothesis that states 'the error variability is expected to be less than 1'

c. the hypothesis that states what the experiment was designed to investigate

d. the hypothesis that states the number of subjects to be used in the experiment

_____ 10. If all other factors are held constant, increases in the difference between the sample mean and the population mean will _________ the value of the t-statistic.

a. increase

b. decrease

c. have no effect on

d. can't answer:Not enough information