The average weight of the entire batch of the boxes of cereal filled today was 20.15 ounces. A random sample of four boxes was selected with the following weights: 20.05, 20.56, 20.72, and 20.43. The sampling error for this sample is ____________ .
A)0.29
B)0.11
C)0.00
D)- 0.16

Question

Quizplus · Accepted Answer

The sampling error is calculated as the difference between the sample mean and the population mean. The sample mean is (20.05 + 20.56 + 20.72 + 20.43) / 4 = 20.44. The population mean is 20.15. Therefore, the sampling error is 20.44 - 20.15 = 0.29.

The Average Weight of the Entire Batch of the Boxes