Question: Anticipated consumer demand for a product next month can be represented by a normal random variable with mean 1,200 units and standard deviation 100 units.

(a) What is the probability that sales will exceed 1,000 units?

(b) What is the probability that sales will be between 1,100 and 1,300 units?

(c) The probability is 0.10 that sales will be more than how many units?

(d) The probability is 0.15 that sales will be less than how many units?

(e) Find a range that contains 80% of the sales.