Crown-Rump Length. Following are the data on age of fetuses and length of crown-rump from Exercise 15.26.

Question:

x 10 10 13 13 18 19 19 23 25 28 y 66 66 108 106 161 166 177 228 235 280

a. Determine a point estimate for the mean crown-rump length of all 19-week-old fetuses.

b. Find a 90% confidence interval for the mean crown-rump length of all 19-week-old fetuses.

c. Find the predicted crown-rump length of a 19-week-old fetus.

d. Determine a 90% prediction interval for the crown-rump length of a 19-week-old fetus.

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