0
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7
-32
z - 7Example: if z = 20z - 7 = 20 - 7 = 13
The one-tailed z-value is: P(Z < z) = 0.9693 => z = 1.8706
If ' z ' is greater than ' 1 ', then ' z ' is. If ' z ' is less than ' 1 ', then ' 1 ' is.