16.The alternate hypothesis for the related measures T test is

a.Mean D does not equal zero

b.Mew D =zero

c.these scores are not related

d.Mew D does not equal zero.

17.If I wanted to conduct a related measures T test in SPSS,on, say,hours of sleep before and hours of sleep after an exam,I would have

a.2 variables:sleepbeforeand sleepafter

b.none of the answers are correct

c.2 variables:one with all the sleep scores,and a grouping variable for before and after

d.1 variable with all the sleep scores listed

18.Once I have the difference scores for my data in a related samples T test

a.all the answers are correct

b.the difference scores can be used to calculate Mean D.

c.I can use the difference scores to get the standard error

d.I can in essence "throw out" my other scores since the only ones that matter are the difference scores

19.I have a research study in which 25people provide their scores on weight at time one, and again at time two.The df for a t test inthis study is:

a.48

b.52

c.24

d.26

20.In the related measures T test,regarding the Levene'stest for equality of variances

a.it is unnessecary

b.it must be non significant

c.none of the answers are correct

d.it must be significant