What is the standard deviation if the average fraction nonconforming of 0.83 is found from samples of constant size 100?
A)0.038
B)0.069
C)0.050
D)0.049

Question

Quizplus · Accepted Answer

The standard deviation is the square root of the variance, which is the average of the squared deviations from the mean. In this case, the mean is 0.83 and the sample size is 100, so the variance is 0.83 * (1 - 0.83) / 100 = 0.0014. Therefore, the standard deviation is the square root of 0.0014, which is 0.038.

What Is the Standard Deviation If the Average Fraction Nonconforming