The amount of cereal in a 20oz box of Cheerios is actually normally distributed with a mean of 21oz and a standard deviation of 0.4 oz (so that you usually get at least as much as you paid for). Costco sells Cheerios in packages of two boxes.

(a) What is the distribution of the amount of Cheerios in a package of two boxes?

Normal (μ = 42, σ = 0.4)

Normal (μ = 42, σ = 0.8)

Normal (μ = 42, σ = 0.447214)

Normal (μ = 42, σ = 0.565685)

(b) What is the probability that a randomly selected package of Cheerios contains more than 42.5oz? Round your answer to four decimal places. 0.8365