Question

A salesman has a 70% chance to sell a product to any customer. The behavior of successive customers is independent. If two customers a and b enter, what is the probability that the salesman will sell the product to customer a or b?

Answer 1

Answer:

0.91

Step-by-step explanation:

P(sale)= 0.7  

P(not sale)= 0.3  

P(sale A or B) = P(Sale A)+P(sale B) - P(sale A and B)  

= 0.7 + 0.7 - 0.7(0.7) = 1.4 - 0.49 = 0.91