John runs a computer software store. Yesterday he counted 120 people who walked

Question

John runs a computer software store. Yesterday he counted 120 people who walked by the store, 65 of whom came into the store. Of the 65, only 30 bought something in the store. (a) Estimate the probability that a person who walks by the store will enter the store. (Round your answer to two decimal places.) 0.2149X (b) Estimate the probability that a person who walks into the store will buy something. (Round your answer to two decimal places.) c) Estimate the probability that a person who walks by the store will come in and buy something. (Round your answer to two decimal places.) (d) Estimate the probability that a person who comes into the store will buy nothing. (Round your answer to two decimal places.)

Explanation / Answer

(a) Estimate probability that a person who walks by the store will enter the store = 65/120 = 0.54

(b) Estimate probability that a person who walks into the store will buy something = 30/65 = 0.46

(c) Estimate probability that a person who wals by the store will comein and buy something = 30/120 = 0.25

(d) Estimated probability that a person who comes into the store will buy nothing = 35/65 = 0.54

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