A local drug store carries a certain drug in three different doses 4ml, 8 ml, or 16 ml. The store manager has created the following pmf of X= the amount of ml doses that are purchased during a given year.

X 4 8 16 P(x) 0.62 0.18 0.20

Find:
a) Find the probability that someone will purchase at most 8 ml.

b) Find E(X) and V(X)

c) If the price of the drug at this store having X ml is 25X – 22, what is the expected price paid by the next customer?

d) Find the probability that someone will purchase at least 8 ml.

Answer rating: 100% (QA)

a P at most 8ml p4 p8 062 018 080 b Ex Sx ... View the full answer