ASK YOUR TEACHER Suppose X is a normal random variable with mean μ = 90 and...

Question

Question

ASK YOUR TEACHER

Suppose X is a normal random variable with mean μ = 90 and standard deviation σ = 5. Find b such that

P(90 ≤ X ≤ b) = 0.3.

HINT [See Example 3.] (Round your answer to one decimal place.)

math Statistics-And-Probability

Answer 1

Answer #1

Graph:

Answer 2

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