Acollege admissions officer takes a simple random sample of 109 entering freshmen and computes their mean mathematics sat score to be 464 . assume the population standard deviation is 116 . what is the lower bound of the 99% confidence interval?

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)