Let X equal the weight in grams of a miniature candy bar. Assume that = E(X)

Let X equal the weight in grams of a miniature candy bar. Assume that μ = E(X) = 24.43 and σ2 = Var(X) = 2.20. Let X be the sample mean of a random sample of n = 30 candy bars. Find
(a) E(X).
(b) Var(X).
(c) P(24.17 ≤ X ≤ 24.82), Approximately.