D Question 18 1 pts 'S This is a continuation of the previous question. A sample of 60 adults, aged 24 - 29 years, is chosen and their mean serum cholesterol level is found to be 186 milligrams per deciliter with a standard deviation of 40 milligrams per deciliter. Construct the 98% confidence interval to estimate the mean serum cholesterol level for all adults aged 24 - 29 years. Round the bounds of the interval to the nearest whole milligram per deciliter. Be sure to enter the lower bound in the first box. milligrams per deciliter