Math Answers

Find the standard deviation of the expected value of the probability distribution, X={1, 2, 3, 4, 5} P(X)={.10, .35, .15, .23, .17}

Problem:

Five coins are tossed. Let G be the random variable representing the number of heads (H) that occur. Find the values of the random variable G.

What to find:

1. The number of possible outcomes or sample space (S). 2. The sample spaces (place in the table).

3. The correct values of random variable G.

4. Interpretation or description about the value of the random variable G.

. For a box containing 4 black balls, and 2 green balls, 3 balls are drawn

in succession. Each ball placed black in the box before the next draw

is made . Let G be a random variable representing the number of

green balls that can be drawn. Find the values of random variable G

Find the standard deviation of the discrete random variable X with the following probability distribution, X={3, 2, 1, 0} and P(X) = {.125, .375, .375, .125}

consider a population consisting of 2,5,8,11,13 and 25. suppose sample of size 5 are drawn from this population.

A TELCO office has seven telephone lines. For the past months, the probability distribution of the random variable X which represents the number of busy lines per day, X={0, 1, 2, 3, 4, 5, 6, 7} P(X)={.02, .27, .06, .22, .15, .04, .08, .16}, what is the probability that the number of busy telephone lines in a day is fewer than six but at least one?

consider a papulation consisting 2,5,8,11,13 and 25. Suppose sample of size 5 are drawn from this population.

(3a-5)(9a²+25)(3a+5)

A basket contains 5 white balls and 2 green balls. If three balls are taken from the basket one after another, determine the possible values of the random variable G representing the number of green balls. List the sample space. Determine the probability of the random variable G. *

Let P = {(1, 4),(3, 5),(4, 1)}, Q = {(1, 5),(2, 2),(3, 4),(5, 2)} and R ={(4, 4),(2, 1),(5, 3),(3, 4)}.

Find P ◦ Q ◦ R