# Bernoulli trial

A used car saleswoman estimates that each time she shows a customer a car, there is a probability of 0.1 that the customer will buy the car. The saleswoman would like to sell at least one car per week. If showing a car is a Bernoulli trial with a probability of 0.95 of at least one sale,

(i) how many cars would the saleswoman show per week?

(ii) calculate the probability of exactly three sales per week.

(i) how many cars would the saleswoman show per week?

(ii) calculate the probability of exactly three sales per week.

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