The Ground Nugget Potato Company wants to sell its potatoes overseas in brown octagonal gift boxes. To create the design and make sure the boxes have the proper
thickness, researchers need to estimate the average weight of the company's potatoes.
A random sample of 100 potatoes has a mean of 700 grams. Using previous research,
you assume a population standard deviation o of .89 grams. (As you continue to study
statistics you will look at how to estimate o, which is what researchers do in the real
world. For now, assume you know it.)

B. Give the minimum sample size for creating a 95% confidence interval with a
margin of error of .5 grams.