Question

Last year, the numbers of skateboards produced per day at a certain factory were normally distributed with a mean of 20,500 skateboards and a standard deviation of 55 skateboards.
*On what percent of the days last year did the factory produce 20,555 skateboards or fewer?
*On what percent of the days last year did the factory produce 20,610 skateboards or more?
*On what percent of the days last year did the factory produce 20,445 skateboards or fewer?

Answer 1

You dont have to answer all 3 questions. Just help me on what you can :)

Answer 2

anyone?