Question

no explanation required:
Question 24

A researcher obtains a test statistic of z = –2.04 for a one-sample z-test. What is the decision for this test at a .05 level of significance?

Select one:

a. Reject the null hypothesis

b. There is not enough information to make a decision.

c. Fail to reject the null hypothesis

Q 25

Question 25

A key difference between a t-statistic and a z-statistic is that the standard error is ______ to compute a t-statistic.

Select one:

a. placed in the numerator

b. replaced

c. removed

d. estimated

Q 26

Question 26

A researcher compares the difference in the amount of texting by students in class during the first week and last week of classes. The type of design described here is called a

Select one:

a. Repeated-measures design and matched-samples design

b. Matched-samples design

c. Repeated-measures design

Q 27

Question 27

A researcher compares the amount of college debt (in dollars) that undergraduate students incur up to their four-year degree. College debt is on what scale of measurement?

Select one:

a. Nominal

b. Ordinal

c. Ratio

d. Interval

Answer 1

A researcher obtains a test statistic of z = –2.04 for a one-sample z-test. What is the decision for this test at a .05 level of significance?

Answer: option "A" is correct. (Reject the null hypothesis).

A key difference between a t-statistic and a z-statistic is that the standard error is ______ to compute a t-statistic.

Answer :- option "D" is correct. (Estimated).

A researchre compares the difference in the amount of texting by students in class during the first week and last week of classes. The type of design described here is called a

Answer :- option "c" is correct. ( Repeated-measures design)

A researcher compares the amount of college debt (in dollars) that undergraduate students incur up to their four-year degree. College debt is on what scale of measurement?

Answer :- option "c" is correct. (Ratio)