Coronary bypass surgery: A healthcare research agency reported that 48% of people Who Rau Thirteen coronary bypass patients are sampled. Part 1 of 2 (a) What is the mean number of people over the age of 65 in a sample of 13 coronary bypass patients? Round the answer to two decimal places. The mean number of people over the age of 65 is Part 2 of 2 X (b) What is the standard deviation of the number of people over the age of 65 in a sample of 13 coronary bypass patients? Round the answer to four decimal places. The standard deviation of the number of people over the age of 65 is

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