Question

Sue Anne owns a medium-sized business. The probability model below describes the number of employees that may call in sick on any given day. What is the mean number of employees calling in sick each day?

probability model with number of employees sick in column 1. The probabilities are in column 2.
X
Number of
Employees Sick P(X)
0 0.05
1 0.40
2 0.30
3. 0.30
4. 0.05

Answer 1

The mean is
`\mu = 2.1`

Explanation:

The mean number of employees calling sick per day can be mathematically represented as

`\mu = 0* 0.05 + 1 * 0.40 + 2 * 0.3 + 3 * 0.3 + 4*0.05`

`\mu = 2.1`