Suppose a chef claims that her meatball weight is less than 3 ounces, on average. Several of her customers do not believe her, so the chef decides to do a hypothesis test, at a 1% significance level, to persuade them. She cooks 25 meatballs. The
mean weight of the sample meatballs is 2 ounces. The chef knows from experience that the standard deviation for her
meatball weight is 0.5 ounces.