1.) Point systems alone have serious limitations because of:

a. Statistics

b. Random sampling variation

c. Difficulties in coming up with an exact value

d. The hypothetical nature of confidence limits

2.) Which of the following is an estimation rather than a hypothesis testing question?

a. Are this yearâ€™s 1st graders taller, on the average, than those 10 years ago?

b. Does the mean score from the applicant population differ from the national norm?

c. How much of an effect does the drug have on fine motor coordination?

d. None of the above

3.) Which set of circumstances is most likely to result in a narrow confidence interval?

a. Large n and a confidence level of .95

b. Large n and a confidence level of .99

c. Small n and a confidence level of .95

d. Small n and a confidence level of .99

4.) Interval estimates are generally to be preferred over point estimates because interval estimates

a. Have a firmer statistical basis

b. Result in greater precision

c. Account for a sampling error

5.) Which of the following is a hypothesis testing rather than an estimate question?

a. What is the proportion of psychology majors going on to graduate school?

b. How tall is the average 1st grader?

c. Does the new teaching method result in greater learning compared with the old?

d. None of the above

**Subject Mathematics General Statistics**