Some iq tests are standardized based on the assumption that the population mean is 100 and the standard deviation is 15. test graders decide to reject this hypothesis if a random sample of 25 people has a mean iq greater than 110. assuming that iq scores are normally distributed, what's the power of the test if the true population mean is 105?

Amajor grocery store chain is trying to cut down on waste. currently, they get peaches from two different distributors, whole fruits and green grocer. out of a two large shipments, the manager randomly selects items from both suppliers and counts the number of items that are not sell-able due to bruising, disease or other problems. she then makes a confidence interval. is there a significant difference in the quality of the peaches between the two distributors? 95% ci for pw-pg: (0.064, 0.156)