Question: 33. The data from exercise 2 follow. xi 3 12 6 20 14 yi 55 40 55 10 15 a. Estimate the standard deviation of

33. The data from exercise 2 follow.

xi 3 12 6 20 14 yi 55 40 55 10 15

a. Estimate the standard deviation of yˆ* when x = 8.

b. Develop a 95% confidence interval for the expected value of y when x = 8.

c. Estimate the standard deviation of an individual value of y when x = 8.

d. Develop a 95% prediction interval for y when x = 8.

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