Question

. Computer the standard deviation of the following probability distribution.

x 4, 5 ,6

P(x) 0.1, 0.8, 0.1

Answer 1

We are given the following probability distribution:

x	4	5	6
P(x)	0.1	0.8	0.1

Before we find the standard deviation of x, we find:

Thus, the variance of x is given by:

Thus, the standard deviation of x is given by:

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