Exhibit 7-4
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.
-Refer to Exhibit 7-4. 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 as the population standard deviation divided by the square root of the sample size: 0.22 / √121 = 0.02.

Exhibit 7-4 a Random Sample of 121 Bottles of Cologne Showed an Showed