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 -23 -17 -9 -3 P(X = x) 0.50 0.25 0.15 0.10 Mean Variance Standard deviation

          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       -23     -17     -9      -3
P(X = x) 0.50    0.25    0.15    0.10

Mean
Variance
Standard deviation

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 -23 -17 -9 -3
P(X = x) 0.50 0.25 0.15 0.10

Mean
Variance
Standard deviation

Added by Josefa M.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Banhishikha Sinha

03/20/2022

Step 1

The mean is calculated using the formula: \[ \mu = \sum (x \cdot P(X = x)) \] \[ \mu = (-23 \cdot 0.50) + (-17 \cdot 0.25) + (-9 \cdot 0.15) + (-3 \cdot 0.10) \] \[ \mu = (-11.5) + (-4.25) + (-1.35) + (-0.3) \] \[ \mu = -17.4 \] Show more…

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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: -23, -17, -9, -3 P(X = x): 0.50, 0.25, 0.15, 0.10 Mean Variance Standard deviation