A stationary store has decided to accept a large shipment of ball-point pens if an inspection of 19 randomly selected pens yields no more than two defective pens.
A stationary store has decided to accept a large shipment of ball-point
pens if an inspection of 19 randomly selected pens yields no more than two defective pens.
(b) Find the probability that this shipment is not accepted if 20% of the total shipment is defective. (Use 3 decimal places.)