Question: Use the data in Exercise 21 in Section 13.1 for the following. a. Compute a point estimate of the mean lifespan of butterflies with a

Use the data in Exercise 21 in Section 13.1 for the following.

a. Compute a point estimate of the mean lifespan of butterflies with a wingspan of 30 millimeters.

b. Construct a 95% confidence interval for the mean lifespan of butterflies with a wingspan of 30 millimeters.

c. Predict the lifespan of a particular butterfly whose wingspan is 30 millimeters.

d. Construct a 95% prediction interval for the lifespan of a particular butterfly whose wingspan is 30 millimeters.

Exercise 21 Do larger butterflies live longer? The wingspan (in millimeters) and the lifespan in the adult state (in days) were measured for 22 species of butterfly. Following are the results. Wingspan Lifespan Wingspan Lifespan 35.5 19.8 25.9 32.5 30.6 17.3 31.3 27.5

Wingspan Lifespan Wingspan Lifespan 35.5 19.8 25.9 32.5 30.6 17.3 31.3 27.5 30.0 27.5 23.0 31.0 32.3 22.4 26.3 37.4 23.9 40.7 23.7 22.6 27.7 18.3 27.1 23.1 28.8 25.9 28.1 18.5 35.9 23.1 25.9 32.3 25.4 24.0 28.8 29.1 24.6 38.8 31.4 37.0 28.1 36.5 28.5 33.7

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