Probability that less than 64 patients will not be satisfied

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Normal approximation to the binomial distribution.

According to a hospital administrator, historical records over the past 10 years have shown that 20 percent of major surgery patients are dissatisfied with after-surgery care in the hospital. A scientific poll based on 400 hospital patients has just been conducted. What is the probability that less than 64 patients will not be satisfied with the after-surgery care?

Reference no: EM1316246

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