Let X be normally distributed with mean = 120 and standard deviation = 20. a.
Question:
Let X be normally distributed with mean μ = 120 and standard deviation σ = 20.
a. Find P(X≤ 86).
b. Find P(80≤ X ≤ 100).
c. Find x such that P(X ≤ x) = 0.40.
d. Find x such that P(X > x) = 0.90. LO5
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