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