# L. and found that participants wearing red outfits won significantly more often than those wearing blue...

###### Question:

l. and found that participants wearing red outfits won significantly more often than those wearing blue a. In 50 wrestling matches involving red versus blue, suppose that the red outfit won 31 times and lost 19 times. Is this result sufficient to conclude that red wins significantly more than would be expected by chance? Test at the .05 level of significance. b. In 100 matches, suppose red won 62 times and lost 38. Is this sufficient to conclude that red wins sig- nificantly more than would be expected by chance? Again, use a-05 c.Note that the winning percentage for red uniforms in part a is identical to the percentage in part b (31 out of 50 is 62%, and 62 out of 100 is also 62%). Although the two samples have an identical winning percentages, one is significant and the other is not. Explain why the two samples lead to 3.in problem 12, a researcher asked college students to evaluate three new cell phone designs. However, the researcher suspects that college students may have criteria that are different from those used by older adults. To test this hypothesis, the researcher repeats the study using a sample of n- 60 older adults in addition to a sample of n -60 students. The distribution of preference is as follows: Design 1 Design 2 Design3 Stadent Older Adult 21 Do the data indicate that the distribution of preferences for older adults is signif

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