Adam thinks the five people who sit next to him in class spend the same amount of money on their haircut on average. To find out he keeps track of how much their haircuts cost for the next couple of months. Assuming the cost of a haircut is random, normal, and the variances are the same, test if the average cost is equal (the tip is included in the price). Name Number of haircuts Average cost Standard deviation for one haircut Mallory 7 11.9 9 Matt 19 12.9 6.5 Stacey 25 9.8 5.5 Whitney 24 16 7.2 James 5 12.7 8.4 Use three decimal places in the table DF SS MS F Groups Error Total

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