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X Is a Normally Distributed Random Variable with a Mean ≤\le

Question 36

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X is a normally distributed random variable with a mean of 50 and a standard deviation of 5. Use Excel to calculate the following:
a.P(x ≤\le 45)
b.P(45 ≤\le x ≤\le 55)
c.P(x ≥\ge 55)
d.x value with .20 in the lower tail
e.x value with .01 in the upper tail

Correct Answer:

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a.P(x blured image 45)
=NORM.DIST(45,50,5,True)
b.P(...

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