The researchers in Exercise 7.19 also compared the actual and listed calories in 20 nationally advertised health and diet foods purchased in Manhattan (see Table 7.5).

Determine the two-sided P value for a test of the null hypothesis that the population mean is 0.

Table 7.5

Exercise 7.19

Medical researchers compared the measured calories in eight locally prepared health and diet foods purchased in Manhattan, New York, with the calories listed on the label [23]. The data in Table 7.4 are the percentage differences between the actual and labeled calories (a positive value means that the measured calories exceeded the amount shown on the product label). Determine the two-sided P value for a test of the null hypothesis that the population mean is 0.

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Noodles Alfredo 2 Cheese curls -28 Green beans -6 Imperial chicken Vegetable soup Cheese -18 10 Mixed fruits 8 Cereal 6 Fig bars Oatmeal raisin cookie Crumb cake Crackers Blue cheese dressing -1 13 0354 10 15 Chocolate pudding Sausage biscuit Lasagna Spread cheese Lentil soup Pasta with shrimp 5 3 -7 3 -0.5 -10 -4 Chocolate mousse 6