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spyderpunch69
15.10.2019 •
Mathematics
What adds to 0 and miltiplies to -49?
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Ответ:
7 + (-7) = 7 - 7 = 0
7 * -7 = -49
Please consider marking this answer as Brainliest to help me advance.
Ответ:
The mean of the random variable is 0.
The variance of the random variable is![\frac{3}{2}](/tpl/images/1378/0847/dbf42.png)
Step-by-step explanation:
We are given the following probability distribution:
Mean:
Sum of each value multiplied by its probabilities. So
The mean of the random variable is 0.
Variance:
Sum of the difference squared between each value and the mean, multiplied by its probabilities. So
The variance of the random variable is![\frac{3}{2}](/tpl/images/1378/0847/dbf42.png)