Question 7 options:

A company that sells jars of olives would like to verify that each batch is within a reasonable tolerance of the printed 8 oz weight on the jar. It is known that the population standard deviation of the fill weight is 1.63 oz.

(a) Assuming that the company would like to be 95% confident of the results, find the critical value that corresponds to this level of confidence? Round to two decimals and remember that critical values are defined to be positive.

(b) If the company would like to have a maximum error of 0.25 oz, how many jars of olives should be sampled