An electric sale gives a reading equal to the true weight plus a random error that isnormally distributed with mean 0 and standa
rd deviationσ=.1 mg. Suppose that the results of fivesuccessive weightings of the same object are as follows:_______ 3.142, 3.163, 3.155, 3.150, 3.141.(a) Determine a 95 percent confidence interval estimate of the true weight. (b) Determine a 99 percent confidence interval estimate of the true weight.