Question 1174032
<pre><font face = "Tohoma" size = 3 color = "indigo"><b>
 
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.
</font></b></pre>