Please round the answer to two decimal places for the first answer. Please found answer to the fourth decimal place on second answer. Thanks!!!

Coronary bypass surgery: A healthcare research agency reported that 47% of people who had coronary bypass surgery in 2008 were over the age of 65. Eleven coronary bypass patients are sampled. EO Part 1 of 2 (a) What is the mean number of people over the age of 65 in a sample of 11 coronary bypass patients? Round the answer to two decimal places. X The mean number of people over the age of 65 is 4.7 olo Part 2 of 2 (b) What is the standard deviation of the number of people over the age of 65 in a sample of 11 coronary bypass patients? Round the answer to four decimal places. The standard deviation of the number of people over the age of 65 is 1.5783 X