We compare the attitude scores of people tested in the morning to their scores when tested in the afternoon. We obtain the following interval data but it does not have homogeneous variance. With a = .05, is there a significant difference in scores as a function of testing times?

(a) Do the groups differ significantly (a = .05) ?
(b) What do you conclude about maturity scores in the population?

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Morning Afternoon 14 18 20 28 36 31 19 48 10 49 20 29 34 20 24