Question

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 -39 -21 -13 -7 P(X = x) 0.37 0.33 0.22 0.08

Name: 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 calculati 84483
Uploaded: 2022-07-21T20:00:07-08:00
Duration: 2 min 56 s
Channel: David Nguyen
Description: 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 calculati 84483

          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
-39
-21
-13
-7

P(X = x)
0.37
0.33
0.22
0.08

Added by Julian I.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert David Nguyen

07/21/2022

Step 1

E[X] = (-39)(0.37) + (-21)(0.33) + (-13)(0.22) + (-7)(0.08) = -14.4300 - 6.9300 - 2.8600 - 0.5600 = -24.7800 So the mean is μ = -24.78. Show more…

Show all steps

Thanks for your feedback!

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 -39 -21 -13 -7 P(X = x) 0.37 0.33 0.22 0.08