Suppose that the probabilities of a customer purchasing 0, 1, or 2 books at a book store are 0.2, 0.3, and 0.5, respectively

Question

2 years ago

6

. What is the expected number of books a customer will purchase?

1 answer:

svetlana [45] · Answer 1 · 2022-08-16T10:42:48+03:00

Answer:

Expectation number of books a customer will purchase = 1.3

Step-by-step explanation:

x : 0 1 2

p(x) :0.2, 0.3, and 0.5

Expectation

E(X) = ∑x P(x)

= 0 X 0.2 +1 X 0.3+ 2 X 0.5

= 1.3

Expectation E(X) = 1.3

Expectation number of books a customer will purchase = 1.3

Suppose that the probabilities of a customer purchasing​ 0, 1, or 2 books at a book store are 0.2​, 0.3​, and 0.5​, respectively