SOLUTION: A random variable X is normally distributed with a mean of 85 and a standard deviation of 20. Calculate the probability that X is at most 125

Question 1174032: A random variable X is normally distributed with a mean of 85 and a standard deviation of 20. Calculate the probability that X is at most 125
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!


 
Hi,
A random variable X is normally distributed with a mean of 85 and a standard deviation of 20. 
Calculate the probability that X is at most 125

Normal Distribution:   μ = 85 and σ= 20

P(x ≤ 125) = normalcdf(-9999,125,85,20) = .9772

Important You are comfortable with Your calculator (mine a Casio fx-115 ES plus)

Wish You the Best in your Studies.

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