Multiple Choice
A random sample of 150 teachers in an inner-city school district found that 72% of them had volunteered time to a local charitable cause within the past 12 months. What is the standard error of the sample proportion?
A) 0.001
B) 0.016
C) 0.057
D) 0.069
E) 0.037
Correct Answer:
Verified
Correct Answer:
Verified
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