Please define the general rule for the probability of a union of two events (sometimes called the additive rule).

The expected value of a binomial distribution is expressed as np, where n equals the number of trials and p equals the probability of success of any individual trial.

TRUE

FALSE

The standard deviation equals the square of the variance.

TRUE

FALSE

Define the following

X =

=

=

Z =

The F statistic is the ratio of two sample standard deviations from independent normal distributions.

TRUE

FALSE

A discrete random variable has a mean of 400 and a variance of 64. What is the standard deviation?

A) 64

B) 8

C) 20

D) 400

E) None of the above