The lifetimes of light bulbs are normally distributed with a mean of 500 hours and a standard deviation of 25 hours. How long would a lightbulb need to last to be in the top 1% of lifetimes

Little’s law firm has just one lawyer. customers arrive randomly at an average rate of 6 per 8 hour workday. service times have a mean of 50 minutes and a standard deviation of 20 minutes. how long does a customer spend at little’s law firm on average?

Find the value. a. 0.003 b. 0.03 c. 0.3 d. 3

Let event a = you roll an even number on the first cube.let event b = you roll a 6 on the second cube.are the events independent or dependent? why?