Select all the statements or equations that show that events A and B are independent. a. P(A and B) = P(A) · P(B)

b. P(A or B) = P(A) + P(B) – P(AandB)

C. P(A|B) = P(A) and P(B|A) = P(B)

d. P(A) is the same whether event B happens or not.

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

Let the closed interval [a , b] be the domain of function f. the domain of f(x - 3) is given by (a) the open interval (a , b) (b) the closed interval [a , b] (c) the closed interval [a - 3 , b - 3] (d) the closed interval [a + 3 , b + 3]

For the equations below which statement is true ?