Suppose compact fluorescent light bulbs last, on average, 9,500 hours. The distribution is normal and the standard deviation is 400 hours. What percent of light bulbs burn out within 10,300 hours?

Suppose sat writing scores are normally distributed with a mean of 497 and a standard deviation of 109. a university plans to award scholarships to students whose scores are in the top 2%. what is the minimum score required for the scholarship? round your answer to the nearest whole number, if necessary.