Tammy is a general contractor and has submitted two bids for two ...

[captainjonesify]

Tammy is a general contractor and has submitted two bids for two projects (A and B). The probability of getting project A is .65 . The probability of getting project B is .77 . The probability of getting at least one of the projects is .90.
 a. What is the probability that she will get both projects?
  b. Are the events of getting the two projects mutually exclusive? Explain, using probabilities.
  c. Are the two events independent? Explain, using probabilities.

Question 2

The average hourly wage of computer programmers with 2 years of experience has been 21.80 . Because of high demand for computer programmers, it is believed there has been a significant increase in the average hourly wage of computer programmers. To test whether or not there has been an increase, the correct hypotheses to be tested are
 a. H0:  < 21.80 Ha:   21.80.
   b. H0:  = 21.80 Ha:   21.80.
   c. H0:  > 21.80 Ha:   21.80.
   d. H0:   21.80 Ha:  > 21.80.

[al]

Answer to Question 1

a. .52
b. No, the probability of their intersection is not zero.
c. No, P(A  B) = .6753  P(A)

Answer to Question 2

d

[captainjonesify]

Gracias!

[miss_1456@hotmail.com]

Thanks for the timely response, appreciate it