A random sample of 120 classrooms at a large university found that 70% of them had been cleaned
Properly. What is the standard error of the sample proportion?
A) 0.046
B) 0.082
C) 0.042
D) 0.458
E) 0.028

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The Answer of A random sample of 120 classrooms at a large university found that 70% of them had been cleaned
Properly. What is the standard error of the sample proportion?
A) 0.046
B) 0.082
C) 0.042
D) 0.458
E) 0.028

A Random Sample of 120 Classrooms at a Large University