# Statictics

In testing a new drug, researchers found that 20% of all patients using it would have a mild side effect. A random sample of 25 patients using the drug is selected. Find the mean and standard deviation of patients having a mild side effect.

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1. Mean = np = 25(.2) = 5
Standard deviation = sqrt((25 * .2*.8))
= 2

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posted by Kuai

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