Binomial random variable for large department chain
1.Suppose that 10 percent of all the new steel-belted radial
tires shipped to a large department chain store are defective. Find the
probability that in a shipment of 30 such tires:
a. At most two are defective.
b. At least two are defective.
2.Surveys show that 40% of all convenience store shoppers
buy milk and 30% buy bread. If 25% buy both bread and milk, what percentage
buys neither?





