Question: Business customers. John runs a computer software store. Yesterday he counted 127 people walk by his store, 58 of whom came into the store. Of the 58, only 25 bought something in the store.

a) Estimate the probability of someone walking by the store will enter the store

b) Estimate the probability of someone entering the store will buy something

c) Estimate the probability someone will come in and buy something

d) Estimate the probability someone will come in and buy nothing