Use the data in Exercise 19 in Section 13.1 for the following:

a. Compute a point estimate for the mean number of calories in fast-food products that contain 15 grams of protein.

b. Construct a 95% confidence interval for the mean number of calories in fast-food products that contain 15 grams of protein.

c. Predict the number of calories in a particular product that contains 15 grams of protein.

d. Construct a 95% prediction interval for the number of calories in a particular product that contains 15 grams of protein.

Exercise 19

The following table presents the number of grams of protein and the number of calories per 100 grams for each of 18 fast-food products.

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Protein Calories Protein Calories 17.25 289 5.62 367 13.73 376 3.58 188 12.96 315 11.97 275 21.24 268 5.84 408 22.54 221 12.22 460 16.23 309 8.05 189 10.64 226 5.15 366 6.16 344 15.93 334 3.69 163 16.52 241