Suppose that X1.....Xn form a random sample from a normal distribuiton for which both the mean mu and variance s^2 are unknown; and let the random variable L denote the length of the shortest confidence interval for mu that can be constructed from the observed values in the sample. Find the value E(L^2) for sample size n = 8 and confidence coefficient c = 0.95. |

Last modified: Wed May 13 12:29:11 EDT 1998