Standard normal scores have a mean of zero and a standard ...

[LaDunn]

Standard normal scores have a mean of zero and a standard deviation of one.
  Indicate whether the statement is true or false

Question 2

Events A and B are defined on a sample space, with P(A) = 0.8 and P(B  A) = 0.3 . What is the probability that A and B can both occur at the same time?

Question 3

All normal distributions have the same general probability function and distribution.
  Indicate whether the statement is true or false

[emily12345]

Answer to Question 1

T

Answer to Question 2

P(A and B) = P(A) P(B  A) = (0.(0.3) = 0.24

Answer to Question 3

T

[LaDunn]

Wow, this really help

[ASDFGJLO]

Gracias!