What is the standard deviation if a proportion of 0.44 of nonconforming items is found from 30 samples of fixed size 110?
A)0.150
B)0.002
C)0.157
D)0.047

Question

Quizplus · Accepted Answer

The standard deviation for a proportion is calculated using the formula: sqrt(p(1-p)/n), where p is the proportion and n is the sample size. Here, p = 0.44 and n = 110. Plugging in these values gives sqrt(0.44*0.56/110) ≈ 0.047.

What Is the Standard Deviation If a Proportion of 0