A researcher is testing a null hypothesis stating that for the general population there is no preference between the two leading brands of cola. In a sample of n = 100 people, 35 preferred brand A and 65 preferred brand B. Assuming that the researcher uses a two-tailed test, what is the appropriate statistical decision?
A) Reject the null hypothesis with = .05 but not with = .01.
B) Reject the null hypothesis with either = .05 or = .01.
C) Fail to reject the null hypothesis with either = .05 or = .01.
D) No decision is possible without additional information.
Question 2
If other factors are held constant, which set of data is most likely to produce a significant value for the repeated-measures t statistic?
A) n = 15 and SS = 10 for the difference scores
B) n = 15 and SS = 100 for the difference scores
C) n = 30 and SS = 10 for the difference scores
D) n = 30 and SS = 100 for the difference scores
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GENERAL BIO IMAGES