Question C.1: A normal distribution has a mean of 20 and a standard deviat...
A normal distribution has a mean of 20 and a standard deviation of 2. What is the z value of 17.5?
x = 17.5
μ = 20
σ = 2
Using the formula for z we find:
z=\frac{x-μ}{σ}
z=\frac{17.5-20}{2}=-1.25
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