3. Example: Point and Interval Estimation 3.1 The normal cholesterol level is believed to be 200. A study was recently conducted to estimate the mean cholesterol for adult males over the age of 55 years. The following random sample data were 2:15 304 1 35 202 BED 195 210 138 255 39!] observed: Given this information, a. What is the point estimate for the population mean? b. To find the 95% confidence interval estimate for the mean cholesterol for adult males over the age of 55 years. c. Do you think that cholesterol for adult males over the age of 55 years is \"normal\"? Why/Why not