Question

An airline CEO claims that she can identify the kindness of a stewardess by examining his/her...

An airline CEO claims that she can identify the kindness of a stewardess by examining his/her vocal responses to 5 simple questions. To test this claim, 16 individuals vocally answered the questions: 8 stewardesses with high customer satisfaction and 8 stewardesses with low customer satisfaction. The CEO analyzed each persons vocal responses and ranked each individual according to his/her kindness (higher rank is perceived as more kind). The sum of ranks for stewardesses with high customer satisfaction was 49.0 and the sum of ranks for stewardesses with low customer satisfaction was 87.0 . Using a Mann-Whitney U test (alpha = .05, two-tailed), is there a significant difference?

In the box below, provide the following information:

Null Hypothesis in sentence form (1 point):

Alternative Hypothesis in sentence form (1 point):  
Critical Value(s) (2 points):

Calculations (4 points): Note: the more detail you provide, the more partial credit that I can give you if you make a mistake.

Outcome (determination of significance or not, effect size if appropriate, and what this reflects in everyday language, 2 points)

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