a city law-enforcement official has stated that 20% of the items sold by pawn shops within the city have been stole. Ralph has just purchased 4 items from one of the city's pawn shops. Assuming that the official is correct, and for x = the number of ralph's purchases that have been stolen, determine the following:
A) P(x)
B) P (2< or equal to x)
C) P( 1 < or equal to x < or equal to 3)
D) P (x < or equal to 2)