Answered

The probabilities that a customer will buy 1, 2, 3, 4 or 5 items in a grocery store are 0.3, 0.1, 0.1, 0.2 and 0.3 respectively. What is the average number of the items that a customer will buy?

Sagot :

NETAYANAGO

Answer:

Step-by-step explanation:

Number of Grocery items X

1

2

3

4

5

Probability P (X)

3/10

1/10

1/10

2/10

3/10

X•P(X)

3/10

2/10

3/10

8/10

15/10

=31/10

=3.1

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