Answer to Question #14648 in Statistics and Probability for Kristine
The lifetimes of the light bulbs produced by Filip Company are normally distributed with a mean of 1,150 hours and a standard deviation of 175 hours.
a. What is the probability that a randomly chosen light bulb will have a lifetime of more than 1,000 hours?
b. What percentage of the light bulbs would be expected to last between 1,000 and 1,500?