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Find the expected number of patients in the sample

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Suppose the national average for medication error is one out of every 1000 patients. A hospital believes that their medication error rate is comparable to the national average. If the hospital randomly selects 500 patients,

a. Find the expected number of patients in the sample that will have had a medication error.

b. What is the standard deviation of the number of patients in the sample that will have had a medication error?

c. What is the probability of observing one or more patients who have had medication errors in the same sample?

d. What is the probability of observing two or more patients who have had medication errors in the same sample?

e. If you observed three patients who have had medication errors in the sample, would you believe that he hospital's medication error rate was comparable to the national average? Give reasons for your conclusions.

Reference no: EM13956904

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