A salesperson estimates that 30% of people make a purchase. Determine the probability distribution for the possible number of sales made for the first five people who enter the store.

Answer 1

Use a binomial probability distribution with n=5 and P=0.3

X= number of sales made for the first 5 customers,

X P(X=x)

0

1

2

3

4

5

Fill up the table above using binomial probabilities: P(X=x)= 5Cx * (0.3)^ * (0.7)^(5-x)