# 1. Calculate the expected valu

1. Calculate the expected value and interpret the answer in context of the problem below.

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. Calculate the expected value.

Number of times a patient will ring the nurse, x 0 1 2 3 4 5

Probability that a patient will ring the nurse, P(x) 0.08  0.16  0.32  0.28  0.12  0.04

### Discussion Prompts

Respond to the following prompts in your initial post:

2. What is the expected value?

3. What does the expected value mean in terms of the context of the problem?

4. How would you use the expected value as one measure for consideration about when to discharge the patient?

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