Find probability x is more than one standard deviation

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Suppose the random variable X has the probability distribution given in the table below.

x

2

3

5

7

11

13

P(x)

0.15

0.25

0.15

0.10

0.30

0.05

a. Find the mean, variance, and standard deviation of X.

b. Find the probability X is more than one standard deviation from the mean.

c. Find P(X ≤ μ + 2σ).

Reference no: EM131426142

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