Question 9 of 17

5.88 Points

A confidence interval (CI) is a range of scores with specific boundaries that should contain the ______ mean.

A.sample

B.population

C.standard error

D.none of the above

Question 10 of 17

5.88 Points

The most common probabilistic sampling approach is:

A.simple random sampling

B.convenient sampling

C.complex sampling

D.error sampling

Question 11 of 17

5.88 Points

The hypothesis predicting that differences exist between the groups being compared is to the hypothesis predicting that no differences exist between the groups being compared as _____ hypothesis is to _____ hypothesis.

A.null; alternative
B.alternative; null
C.one-tailed; two-tailed
D.two-tailed; one tailed

Question 12 of 17

5.88 Points

Directional hypothesis is to non-directional hypothesis as _____ hypothesis is to _____ hypothesis.

A.null; alternative
B.alternative; null
C.one-tailed; two-tailed
D.two-tailed; one-tailed