Refer to Figure 1 for questions 11-14)

If Peter would like to test whethermean sales in Aprildiffered between his treatment and control group, what two sample would he use?

Select one:

Samples A and B

Samples A and C

Samples B and D

Samples C and D

Question12

If Peter would like to test whethermean sales in Aprildiffered between his treatment and control group, what test statistic should he use?

Select one:

Two-Sample t-test assuming equal variance.

Two-Sample t-test assuming unequal variance.

Paired two-sample t-test.

Either A or B, but not C.

None of the above.

Question13

If Peter would like to test whether mean sales for his treatment group differed between April and May, what two samples would he use?

Select one:

A and B

A and C

A and D

C and D

B and C

Question14

If Peter would like to test whethermean sales for his treatment groupdiffered between April and May, what two samples would he use?

Select one:

Two-sample t-test assuming equal variance.

Two-sample t-test assuming Unequal Variance

Paired two-sample t-test.

A or B, but not C.

None of the above.