Probability of selecting a store at random

Reference no: EM1390103

A survey of grocery stores in the Southeast revealed 40 percent had a pharmacy, 50 percent had a floral shop, and 70 percent had a deli. Suppose 10 percent of the stores have all three departments, 30 percent have both a pharmacy and a deli, 25 percent have both a floral shop and deli, and 20 percent have both a pharmacy and floral shop.

(a) What is the probability of selecting a store at random and finding it has both a pharmacy and a floral shop?

(b) What is the probability of selecting a store at random and finding it has both a pharmacy and a deli?

(c) What is the probability of selecting a store that does not have all three departments? (Round your answer to 2 decimal places.)

Reference no: EM1390103

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