Computing the Z-Value
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A normal population has a mean of 50 and a standard deviation of 7.
a) Compute the Z- value associated with 45? Ans: -0.71
b) What % of the population is between 45 and 60? Ans: 72.9%
c) What percent of the population is less than 55? Ans: 76.11%
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Solution Summary
Z-value computed and % of population as required determined.
Solution Preview
(a) z = (x - mu)/sigma = (45 - 50)/7 = -0.7143
(b) z1 = ...
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