﻿ A salesman wants to know the average number of units he sells per sales call. He checks his past records and comes up with the following probabilities: Sales (in units): 0 1 2 3 4 5 Probability: 0.15 0.20 0.10 0.05 0.30 0.20 What is the average number of units he sale call? : Kaysons Education

# A Salesman Wants To Know The Average Number Of Units He Sells Per Sales Call. He Checks His Past Records And Comes Up With The Following Probabilities: Sales (in Units): 0 1 2 3 4 5 Probability: 0.15 0.20 0.10 0.05 0.30 0.20 What Is The Average Number Of Units He Sale Call?

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## Question

### Solution

Correct option is

2.75

Let X denotes the number of units. Then, X is a random variable with the following probability distribution

 xi: 0 1 2 3 4 5 pi: 0.15 0.2 0.1 0.05 0.3 0.2

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