Solved

Given That the Random Variable X Is Normally Distributed with a Mean

Question 2

Multiple Choice

Given that the random variable X is normally distributed with a mean of 20 and a standard deviation of 7, P(28 $\le$ X $\le$ 30) is:

A) 2
B) 0.0507 .
C) 0.8729
D 0.9236

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