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Solution: A study of the effect of television commercials on 12 year old children measured their attention span in seconds. The commercials were for clothes,

Question: A study of the effect of television commercials on 12 year old children measured their attention span in seconds. The commercials were for clothes, food and toys. The results are as follows: (10 points)

At the .05 significance level, is there a difference in the mean attention span of the children for the various commercials? (5)
Would you recommend dropping one of the three commercial types? (5)

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Solution: A study of the effect of television commercials on 12 year old children measured their attention span in seconds. The commercials were for clothes,

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