Question

Checkout times at a drug store are being monitored and the following data has been collected. Each sample contained 20 items.

Sample	Mean	Range
1	3.06	.42
2	3.15	.50
3	3.11	.41
4	3.13	.46
5	3.06	.46
6	3.09	.45

Calculate the lower and upper control limits for the range. (Keep three decimal places)

Question 43 options:

	Lower = 0.191 Upper = 0.664
	Lower = 0.716 Upper = 0.175
	Lower = 3.109 Upper = 3.211
	Lower = 0.185 Upper = 0.716
	Lower = 3.003 Upper = 3.043

Answer 1

Given tia, umbe cn)226 0:20