Question: Find the variance and the standard deviation. A random variable X has the following distribution. X 21 0 1 2 Probability 0.3 0.2 0.2 0.3

Find the variance and the standard deviation.

A random variable X has the following distribution.

X 21 0 1 2 Probability 0.3 0.2 0.2 0.3 Find the variance and the standard deviation for this random variable. Show your work.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Business Statistics Questions!

Q:

4.63 Find the variance and the standard deviation. A random variable X has the following distribution: X 2 1 0 1 Probability 0.1 0.2 0.4 0.3 Find the variance and the standard deviation for this...

Q:

Student Major 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 A M M A M M E M O A E E M A O E M A M A M A O A M E E M A M Hotel Location Cost/Night Boulders Resort &...

Q:

Find the variance and the standard deviation. The random variable X has the following probability distribution: Value of X 0 2 Probability 0.5 0.5 Find the variance 2 X and the standard deviation X...

Q:

4.71 Find the variance and the standard deviation. The random variable X has the following probability distribution: Value of X $0 3 Probability 0.4 0.6 Find the variance s2 X and the standard...

Q:

Mean, variance, and standard deviation: A random variable X has the following probability distribution. a. Find the mean of X. b. Find the variance of X. c. Find the standard deviation of X. x 6 7 89...

Q:

Mean variance and standard deviation: A random variable X has the following probability distributions a. Find the mean of X. b. Find the variance of X. c. Find the standard deviation of X. r 6 78 9...

Q:

For n = 4 and I: = 0.80, what is P(X = 3)? P(X = 3) = D (Round to four decimal places as needed.) Determine the mean and standard deviation of the variable X in the binomial distribution where n = 4...

Q:

Suppose that the random variable X has the following distribution function: X14610 F(x)1/31/25/61 Find the probability distribution of the random variable X. Find the expected value of the random...

Q:

. True or False. Justify for full credit. (a) If P(A) = 0.4, P(B) = 0.5, and A and B are independent, then P(A AND B) = 0.2. (b) If the variance of a data set is 0, then all the observations in this...

Q:

. True or False. Justify for full credit. (a) If P(A) = 0.4, P(B) = 0.5, and A and B are independent, then P(A AND B) = 0.2. (b) If the variance of a data set is 0, then all the observations in this...

Q:

The year-end financial statements of Grunewald Company contained the following elements and corresponding amounts. Assets = $21,600; Common Stock = $5,000; Revenue = $11,500; Dividends = $680;...

Q:

Why is quantitative research important in humanities and social sciences?

Q:

In the context of exemptions under the Securities Act of 1 9 3 3 , which of the following is an incorrect statement regarding Regulation A ? Multiple choice question. Regulation A is much more...

Q:

Data have been accumulated on the heights of children relative to their parents. Suppose that the probabilities that a tall parent will have a tall, medium - height, or short child are 0.6, 0.2 and...