(Answered) 1 according to studies 1 of all patients who undergo

Statistics

1. According to studies, 1% of all patients who undergo laser surgery to correct their vision have serious post laser vision problems. In a sample of 95,000 patients, what is the approximate probability that fewer than 960 will experience serious post laser vision problems?

2. If a population data set is normally distributed, what is the proportion of measurements you would expect to fall in the following intervals:

a. μ±σ
b. μ±2σ
c. μ±3σ

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