What are the expected value, variance and standard deviation of the following probability distribution?
Number of Offices | Proportion of Students p(X) |
0 | 0.08 |
1 | 0.288 |
2 | 0.367 |
3 | 0.122 |
4 | 0.081 |
5 | 0.054 |
6 | 0.008 |
E(x) | |
Var(x) |
What are the expected value, variance and standard deviation of the following probability distribution? Number of...
Find the expected value, the variance, and the standard deviation, when they exist, for the probability density function. if O sxs 2 f(x) = 128 5, ify if x>2 375 What is the expected value? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. The expected value is u (Round to two decimal places as needed.) OB. The expected value does not exist. What is the variance? Select the correct choice below...
please stop posting the wrong answers Variance Standard deviation Variance Standard deviation Chapter 5 The number of students taking the SAT has risen to an ali-time high of more than 1.5 milion (College Board, August 26, 2008), Students are stlowed to regeat the testin hapes of score that is sent to college and unlversity admission offices. The number of tmes the SAT was taken and the number of students are as follows. aserch this course 。 으Champ Number of Times...
Calculate the mean, the variance, and the standard deviation of the following discrete probability distribution. (Negative values should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places. Round your final answers to 2 decimal places.) x −28 −24 −9 −4 P(X = x) 0.42 0.30 0.20 0.08 mean= variance= standard deviation=
What are the expected value and standard deviation of the following probability distribution? Random Variable X Probability 1 0.05 2 0.05 3 0.10 4 0.10 5 0.15 6 0.15 7 0.25 8 0.15
at VHU SUCCESS. e. Find the expected value, variance, and standard deviation. 10. Consider a binomial experiment with n = 10 and p = 0.10. Use the binomial tables (Appendix B) to answer parts (a) through (d). a. Find f(0). b. Find f(2). Find P(x < 2). Find Par > 1). e. Find E(x). f. Find Var(x) and o.
(1 point) X is a random variable having a probability distribution with a mean/expected value of E(X) = 26.8 and a variance of Var(X) = 29. Consider the following random variables. A = 5X B = 5X – 2 C = -2X +9 Answer parts (a) through (c). Part (a) Find the expected value and variance of A. E(A) = !!! (use two decimals) Var(A) = (use two decimals) blues Part (b) Find the expected value and variance of B....
For the probability distribution given below find the expected value and the standard deviation. Round off your answers to one decimal place. x p(x) 0 0.038 1 0.087 2 0.129 3 0.285 4 0.461
Calculate the mean, the variance, and the standard deviation of the following discrete probability distribution. (Negative values should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places. Round your final answers to 2 decimal places.) x-36-26-15-4P(X=x)0.320.360.210.11MeanVarianceStandard deviation
Find the mean, variance and standard deviation for the probability distribution given below: X -3 5 10 12 P(X) 0.562 0.137 0.201 0.1 A. Mean = B. Variance = C. Standard Deviation =
Find the expected value E(X), the variance Var(X) and the standard deviation σ(X) for the density function. (Round your answers to four decimal places.) f(x) = 1 x on [1, e] E(X) = Var(X) = σ(X) =