统计概率的计算,Your store is interested in learning more about customers’ purchasingpatterns and how they relate to the frequency of store visits.The probabilitythat a customer’s visit will result in a purchase is 0.35.The probability thata customer has been to the store within the past month is 0.20.Of those whodid not buy anything,12% had been there within the past month.a.Find the probability of making a purchase given that the customer had been to the st

统计概率的计算,
Your store is interested in learning more about customers’ purchasing
patterns and how they relate to the frequency of store visits.The probability
that a customer’s visit will result in a purchase is 0.35.The probability that
a customer has been to the store within the past month is 0.20.Of those who
did not buy anything,12% had been there within the past month.
a.Find the probability of making a purchase given that the customer had been to the store within the past
month.
b.What percent of customers are frequent shoppers,defined as making a purchase and having been to thestore within the past month?
答案分别是：0.61 & 0.122