Please answer parts b and c

Question Help The caloric consumption of 41 adults was measured and found to average 2, 147. Assume the population standard deviation is 252 calories per day. Construct confidence intervals to estimate the mean number of calories consumed per day for the population with the confidence levels shown below. a. 92% b. 96% c. 99% a. The 92% confidence interval has a lower limit of 2078.1 and an upper limit of 2215.9 (Round to one decimal place as needed.) b. The 96% confidence interval has a lower limit of and an upper limit of ]. (Round to one decimal place as needed.)