# In a company with 20 employees, there are 7 earning $10/hour, 3 earning $12/hour, 4 earning $15/hour, 2 earning $20/hour,...

**katgro**

In a company with 20 employees, there are 7 earning $10/hour, 3 earning $12/hour, 4 earning $15/hour, 2 earning $20/hour, and 4 earning $24/hour. One person from the company is selected at random.
a. What is the expected value of the person’s salary?
b. What is the variance?
c. What is the standard deviation?

- 8 years ago
- 999999.99

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