If X is a normal random variable with mean 80 and standard deviation 10, compute the following probabilities by standardizing: a. P(X ≤ 100) b. P(X > 90) c. P(90 < X < 100)

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If X is a normal random variable with mean 80 and standard deviation 10, compute the
following probabilities by standardizing:
a. P(X ≤ 100)
b. P(X>90)
c. P(90 < X ≤ 100)
d. P(|X-80 ≤ 20)
Transcribed Image Text:If X is a normal random variable with mean 80 and standard deviation 10, compute the following probabilities by standardizing: a. P(X ≤ 100) b. P(X>90) c. P(90 < X ≤ 100) d. P(|X-80 ≤ 20)
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