An assembly-line process is used to fill packages with flour. It is desired to estimate the true average net weight. Long experience indicates that the true variance of the net weight is 2 0.25 oz •...

An assembly-line process is used to fill packages with flour.

It is desired to estimate the true average net weight. Long

experience indicates that the true variance of the net weight is

2 0.25 oz • What sample size should be used in order to ensure

the estimate X differs from µ by no more than 0.05 oz with probability of 0.95? (Use Problem 5.5.4.)