14. Which one of the following is NOT a condition of the binomial distribution?

Select one:

A. Only two outcomes

B. At least 10 observations

C. Probability of success remains constant from trial to trial

D. Independent trials

15. What is the relationship between sample size and the standard error of the mean?

Select one:

A. The standard error is unaffected by the sample size

B. The standard error increases as the sample size increases

C. The standard error decreases as the sample size decreases

D. The standard error decreases as the sample size increases

31. A consumer research group is interested in testing an automobile manufacturer's claim that a new economy model will travel at least 25 miles per gallon of gasoline.

To test the manufacturer's claim, the null hypothesis is

Select one:

A. 25

B. 25

C. > 25

D. < 25