As a company manager for Claimstat Corporation there is a .40 ...

[madam-professor]

As a company manager for Claimstat Corporation there is a .40 probability that you will be promoted this year. There is a .72 probability that you will get a promotion or a raise. The probability of getting a promotion and a raise is .25.
 a. If you get a promotion, what is the probability that you will also get a raise?
  b. What is the probability of getting a raise?
  c. Are getting a raise and being promoted independent events? Explain using probabilities.
  d. Are these two events mutually exclusive? Explain using probabilities.

Question 2

A random sample of 16 students selected from the student body of a large university had an average age of 25 years and a standard deviation of 2 years. We want to determine if the average age of all the students at the university is significantly more than 24 . Assume the distribution of the population of ages is normal. The test statistic is
 a. 1.96.
   b. 2.00.
   c. 1.65.
   d. .05.

[shewald78]

Answer to Question 1

a. .625
b. .57
c. No, because P(R)  P(R  P)
d. No, because P(R  P)  0

Answer to Question 2

b

[madam-professor]

Correct answers!

[shewald78]

Great! Please up vote