Assume that the random variable x is normally distributed with mean u = 70 and standard deviation o = 10. Find P(90 < x < 91) 0.9500 0.9951 0.0049 0.4500

The random variable x has a normal distribution with mean 50 and variance 9. Find the value of x, call it x0, such that: a) P(x ≤ xo) = 0.8413 b) P(x > xo) = 0.025 c) P(x > xo) = 0.95 d) P(41 ≤ x ≤ xo) = 0.8630

Assume the random variable X is normally distributed with a mean μ = 50 and standard deviation σ = 4.5. Find the P ( x > 58) (three-decimal accuracy)   Find the P (45 < x < 60) (three-decimal accuracy) Find x so that the area below x is .20. (one-decimal accuracy)