(This involves reading ahead) Yet another historian has decided to randomly sample artifacts from the

above collection with a constant 95% confidence. Use this information to predict the actual average age

of artifacts in the collection (assume we didn't know it was 76, nor do we know the standard deviation

was 14) with

(a) N = 30, and sample average = 55 and a sample standard deviation of 50

(b) N = 30, and sample average = 55 and a sample standard deviation of 25

(c) N = 30, and sample average = 55 and a sample standard deviation of 20

(d) N = 30, and sample average = 55 and a sample standard deviation of 10

(e) N = 30, and sample average = 55 and a sample standard deviation of 5(