STAT EXAM #2

A continuous random variable may assume only integer values in a given interval.

false

All continuous random variables are normally distributed.

false

In a binomial experiment, the results of one trial are dependent on the results of other trials.

false

The mean of the binomial random variable is np(1 − p).

false

The normal probability distribution is a discrete probability distribution.

false

The mean of the binomial distribution is equal to

np

The set of all possible outcomes for an experiment is called a(n)

sample space

Which of the following is not a discrete random variable?

the number of minutes required to run 1 mile

A standard normal distribution has a mean of ________ and standard deviation of ________.

0,1

A continuous probability distribution that has a rectangular shape, where the probability is evenly distributed over an interval of numbers, is called a uniform probability distribution.

true

A discrete random variable may assume a countable sequence or list.

true

The standard deviation of a standard normal distribution is always equal to 1.

true

The time (in seconds) it takes for an athlete to run 50 meters is an example of a continuous random variable.

true