Random samples of four items are selected from a manufacturing process at regular intervals and a certain quality characteristic is measured. After 25 samples,ΣX = 15,350 and ΣR = 411.4. What is the sample size?
A)4
B)25
C)100
D)20

Question

Quizplus · Accepted Answer

The sample size refers to the number of items selected in each sample. Since it is stated that random samples of four items are selected, the sample size is 4.

Random Samples of Four Items Are Selected from a Manufacturing