A random sample of 121 bottles of cologne showed an average content of 4 ounces.It is known that the standard deviation of the contents (i.e., of the population) is 0.22 ounces.The standard error of the mean equals
A) 0.3636
B) 0.0331
C) 0.0200
D) 4.000

Question

Quizplus · Accepted Answer

The standard error of the mean is calculated by dividing the population standard deviation by the square root of the sample size: 0.22 / √121 = 0.0200.

A Random Sample of 121 Bottles of Cologne Showed an Average