Can someone explain to me how to do these problems. The answers are already there, I just need to know how to do them for a test tomorrow. I missed last week of school.

1. Sixty percent of the employees in a firm are engineers. Seventy percent of the employees in the firm have been employed for over 5 years. Fifty five percent of the non engineers have been with the firm for over 5 years..

A.) What’s the probability that an individual is either not an engineer or has been

employed for over 5 years? . .88

B.)If an employee has been with the firm for over 5 years, what’s the probability that he/she is not an engineer? .31

C)What is the probability that a selected employee is both an engineer and has been employed for more than 5 years? .48

D.) Is being an engineer independent of being with the firm for over 5 years? Explain using statistics? P(A)=.6

P(A│B)= .69 A & B not independent

A= engineer; B= employed for over 5 yrs

2. Forty percent of the individuals in a survey are females. Sixty percent of the females drive foreign cars, while 70 percent of the males drive domestic cars.

A.) If an individual drives a foreign car what’s the probability that the individual is a female?

.57

B.) What’s the probability that an individual drives a domestic car?

.58