Finite Math help!!! A die is rolled 3 times, and success is rolling a 4.?

A die is rolled 3 times, and success is rolling a 4.
(a) Construct the binomial distribution that describes this experiment, with x indicating the number of successes.
x Pr(x)
0 ____
1 ____
2 ____
3 ____

(b) Find the mean of this distribution.
μ =

(c) Find the standard deviation of this distribution. (Round your answer to three decimal places.)
σ =

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