70% of North American women have pierced ears. For a survey of 49 women, what is the standard error?
A) 0.5
B) 0.7
C) 0.0655
D) 0.4245
E) 0.3

Name: 70% of North American women have pierced ears. For a survey of 49 women, what is the standard error? A) 0.5 B) 0.7 C) 0.0655 D) 0.4245 E) 0.3
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Question

Quizplus · Accepted Answer

The standard error is calculated by taking the square root of (p(1-p))/n, where p is the proportion (70% or 0.7) and n is the sample size (49). 
So, SE = √(0.7*0.3/49) = 0.0655.

70% of North American Women Have Pierced Ears