To investigate an alleged unfair trade practice, the FederalTrade Commission (FTC) takes a random sample of sixteen “5- ounce”candy bars from a large shipment. The mean of the sample weights is4.85 ounces and the sample standard deviation is 0.1 ounce. It isreasonable to assume the population of candy bar weights isapproximately Normally distributed. Based on this sample, does theFTC have grounds to proceed against the manufacturer for the unfairpractice of short-weight selling, on average? Answer this questionby completing the following steps of a hypothesis test at the 5%significance level.
d. Do you reject or fail to reject the null hypothesis? Why?
e. Does the FTC have grounds to proceed against the manufacturerfor the unfair practice of short-weight selling, on average?Explain your answer.
