1) Which of the following will produce the largest value for t-obtained?

a) n = 36 and s^2 = 36

b) n = 16 and s^2 = 16

c) n = 36 and s^2 = 16

d) n = 16 and s^2 = 36

2) What happens to the inferential statistic (such as t) when the difference in mean scores between groups in an experiment gets larger?

a) The inferential statistic gets larger

b) The inferential statistic stays the same

c) The inferential statistic gets smaller

3) You are conducting an independent-samples (between-subjects) t test. You are going to compare two different scenarios to decide which one is more likely to produce a significant result. Assume that both samples have the same difference between the sample means.

a) n^1 = n^2 = 20 and the sample variance is small

b) n^1 = n^2 = 20 and the sample variance is large

c) n^1 = n^2 = 85 and the sample variance is small

d) n^1 = n^2 = 85 and the sample variance is large

4) Large values of an inferential statistic (such as t) _____ occur by chance.

a) seldom

b) frequently

c) never

5) Which of the following assumptions must be met in order to use the one-sample t test?

a) The population of dependent scores, regardless the scale of measurement used, forms a normal distribution

b) The dependent scores must be interval or ratio scores, regardless of whether the population of scores forms a normal distribution

c) No assumptions must be met

d) The population of dependent scores, which must be interval or ratio scores, forms a normal distribution

6) Which of the following is true of any single-sample experiment?

a) It is not possible to do a single-sample experiment

b) We must know the population mean under the same condition of the independent variable as the one being tested on the sample

c) We must know the sample mean under the condition of the independent variable being tested on the sample, but we do not need to know any population mean

d) We must know the population mean under some condition of the independent variable other than the one being tested on the sample

7) Which of the following accurately describes an independent-samples (aka independent-measures) experiment?

a) Each participant in one group is matched with a participant in the other group on some variable

b) Each participant serves as his or her own control

c) The same sample is tested under each level of the independent variable

d) Separate samples are used in the two conditions of the independent variable