Question

A hospital researcher is interested in the number of times the average post-op patient will ring the nurse during a 12-hour shift. For a random sample of 50 patients, the following information was obtained.

x	P(x)
0	0.085
1	0.160
2	0.311
3	0.274
4	0.123
5	0.047

1. What is the expected number of times a patient will ring the nurse during a 12-hour shift? You must show all work to receive credit for this problem. Simply giving providing a numerical value will

2. What is the standard deviation of the distribution given above? You must show all work to receive credit for this problem. Simply giving providing a numerical value will not receive full credit.

Answer 1

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