The amount of time each week that Dunder Mifflin employees spendin pointless meetings follows a normal distribution with a mean of90 minutes and standard deviation of 10 minutes.
A. What is the probability that employees spend between 81.5 and103.5 minutes in meetings in a week?
B. The probability that employees spend between 80 and ????minutes in meetings in a week is equal to 0.8351.