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