a. Given the normally distributed random variable x with σ=5 and P(x ≥ 25) = .0526 find μ.
b. Given the normally distributed random variable x with μ=25 and P(x ≤ 10) = .0778 find σ.
c. Given the normally distributed random variable x with μ=30 and P(x ≤ 50) = .9772 find σ