4.34 Let X be a random variable with the folowing probability distribution: I |-2 3 5 (x) | 0.3 0.2 0.5 Find the standard deviation of X.

icon
Related questions
Question
4.34 Let X be a random variable with the folowing
probability distribution:
-2 3 5
0.3 0.2 0.5
Find the standard deviation of X.
4.36 Suppose that the probabilities are 0.4, 0.3, 0.2,
and 0.1, respectively, that 0, 1, 2, or 3 power failures
will strike a certain subdivision in any given year. Find
the mean and variance of the random variable X repre-
senting the number of power failures striking this sub-
division.
Transcribed Image Text:4.34 Let X be a random variable with the folowing probability distribution: -2 3 5 0.3 0.2 0.5 Find the standard deviation of X. 4.36 Suppose that the probabilities are 0.4, 0.3, 0.2, and 0.1, respectively, that 0, 1, 2, or 3 power failures will strike a certain subdivision in any given year. Find the mean and variance of the random variable X repre- senting the number of power failures striking this sub- division.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer