statistics

The random variable W can take on the values of 0, 1, 2, 3, or 4. The expected value of W is 2.8. Which of the following is the best interpretation of the expected value of random variable W?

A. A randomly selected value of W must be equal to 2.8.

B.The values of W vary by about 2.8 units from the mean of the distribution.

C.The mean of a random sample of values selected from the distribution will be 2.8.

D.A value of W randomly selected from the distribution will be less than 2.8 units of the mean.

E. For values of W, repeatedly selected at random from the distribution, the mean of the selected values will approach 2.8.

E? or C?

  1. 👍 3
  2. 👎 0
  3. 👁 642
  1. Yes

    1. 👍 0
    2. 👎 8

Respond to this Question

First Name

Your Response

Similar Questions

  1. STATISTICS

    Consider a binomial random variable where the number of trials is 12 and the probability of success on each trial is 0.25. Find the mean and standard deviation of this random variable. I have a mean of 4 and a standard deviation

    asked by John on June 10, 2010
  2. Math

    Suppose a baseball player had 211 hits in a season. In the given probability distribution, the random variable X represents the number of hits the player obtained in the game. x P(x) 0 0.1879 1 0.4106 2 0.2157 3 0.1174 4 0.0624 5

    asked by Amanda on November 26, 2013
  3. Stats

    Which of the following are binomial experiments? (more than one is possible) 1.) A store finds that 32% of people who enter the store will make a purchase. During a day, 50 people enter the store. The random variable represents

    asked by Semmy on October 13, 2015
  4. Statistics

    Let X denote an exponential random variable with unknown parameter λ>0 . Let Y=I(X>5) , the indicator that X is larger than 5 . Recall the definition of the indicator function here is I(X>5)={1ifX>50ifX≤5. We think of Y as a

    asked by Help on May 27, 2020
  5. Statistics

    Suppose x is a uniform random variable with values ranging from 40 to 60. Find the probability that a randomly selected observation exceeds 54.

    asked by Kamal on April 15, 2017
  1. Statistics

    A random variable is normally distributed with a mean of 50 and a standard deviation of 5. b. What is the probability that the random variable will assume a value between 45 and 55 (to 4 decimals)? c. What is the probability that

    asked by Snow on April 26, 2020
  2. Statistics (binomial random variable)

    Let x be a binomial random variable with n = 10 and p = .4 Find the values. P (x›4) P (x≤4) I could really use some examples to help me get started and understand it. Thanks

    asked by sonney32 on April 23, 2011
  3. Statistics

    Let X denote an exponential random variable with unknown parameter λ>0 . Let Y=I(X>5) , the indicator that X is larger than 5 . Recall the definition of the indicator function here is I(X>5)={1ifX>50ifX≤5. We think of Y as a

    asked by Michael on June 2, 2020
  4. statistic

    The random variable x represents the number of boys in a family with three children. Assuming that births of boys and girls are equally likely, find the mean and standard deviation for the random variable x.

    asked by Kim on August 20, 2013
  5. Math

    What is the probability that the random variable has a value between 0.1 and 0.5? The random variable is .125.

    asked by Lyndse on March 7, 2010
  6. Statistics

    A variable is normally distributed with mean 68 and standard deviation 10. Find: a) The value that 85% of all possible values of the variable exceed. b) The two values that divide the area under the corresponding normal curve into

    asked by Janet on April 13, 2015

You can view more similar questions or ask a new question.