**Question: ****A sample of 3 calculators is randomly selected from a group containing 40 defective ****and 20 non-defective calculators. What is probability that all 3 calculators selected will be defective?**

## Probability: Calculating Basic Probabilities – #29553

**Question: ** As a company manager for Claimstat Corp., there is a .40 probability that you will be promoted this year. There is a 0.72 probability that you will get a promotion, a

raise, or both. The probability of getting a promotion and a raise is 0.25.

a. If you get a promotion, what is the probability you will also get a raise?

b. What is the probability you will get a raise?

c. Are getting a raise and getting a promotion independent events? Explain using probabilities.

d. Are these two events mutually exclusive? Explain using probabilities.

**Question: ** As a company manager for Claimstat Corp., there is a .40 probability that you will be promoted this year. There is a 0.72 probability that you will get a promotion, a

raise, or both. The probability of getting a promotion and a raise is 0.25.

a. If you get a promotion, what is the probability you will also get a raise?

b. What is the probability you will get a raise?

c. Are getting a raise and getting a promotion independent events? Explain using probabilities.

d. Are these two events mutually exclusive? Explain using probabilities.