We are more likely to reject the null as...

a. alpha decreases

b.sample size decreases

c. variation decreases

d.variation increases

QUESTION 7 The Pooled Variance needs to be calculated when the two samples have different sample sizes. the two samples have different variances. the two samples have different means. the two samples have the same variance. the two samples have the same sample size. QUESTION 8 The Null Hypothesis for Hartley's Fmax test is the two populations have differentvariances. the two populations have the same sample size. the two populations have different sample sizes. the two populations have the same variance. the two populations have different means. QUESTION 10 To see which type of game elicited the most gambling researchers provided subjects with $100 worth of tokens and two different gambling games they could play and measured how much money they spent at each game. The it according to the null hypothesis would be: _ 200 ' 100 ' 50 ' 25 ' 400 QUESTION 11 Previous surveys have found that people tend to quit following their New Years' Resolutions after 7 days on average. We asked a sample of 16 UofL students how long they kept their resolutions and the average length was 10 days with an SS of 240. Specify the null and alternative hypothesis that UofL students hold their resolutions longer than other people. HO: HUofL 2 7. UofL students DO keep their resolutions longer than others O H1: H UofL 7. UofL students DO keep their resolutions longer than others Ho: HUofL = 10. UofL students DON'T keep their resolutions longer than others H1:H UofL # 10. UofL students DO keep their resolutions longer than others Ho: MUofL = 7. UofL students DO keep their resolutions longer than others H1: H UofL #7. UofL students DON'T keep their resolutions longer than others HO: HUofL S 10. UofL students DON'T keep their resolutions longer than others H1: H UofL > 10. UofL students DO keep their resolutions longer than othersQUESTION 5 5 I =or which of the following research descriptions would an independent samples t-test be Ippropriate? To measure the effect of music on memory, subjects rst listened to classical music while - memorizing word and then the same subjects listened to rock music while memorizing words. _ The null hypothesis was retained, n = 30, alpha = .01 To measure the effect of music on memory, subjects were randomly assigned to either - listen to classical music or to listen to rock music and attempted to memorize a list of words. _ To measure the effect of music on memory, subjects listened to classical music while memorizing words and their performance was compared against expert predictions. To measure the effect of music on memory, subjects listened to classical music while - memorizing words and their performance was compared against the average performance in the population