Question

Exercise 19-22 (LO19-4, LO19-6)

A new machine has just been installed to cut and rough-shape large slugs. The slugs are then transferred to a precision grinder. One of the critical measurements is the outside diameter. The quality control inspector randomly selected five slugs each half-hour, measured the outside diameter, and recorded the results. The measurements (in millimeters) for the period 8:00 a.m. to 10:30 a.m. follow.

		Outside Diameter (millimeters)
Time		1			2			3				4		5
8:00			87.3			87.3			88.1			87.0			87.0
8:30			86.9			88.5			87.6			87.5			87.4
9:00			87.9			88.4			86.9			87.6			88.2
9:30			86.0			88.0			87.2			87.6			87.1
10:00			86.9			87.0			87.2			87.3			86.9
10:30			88.2			86.4			87.3			87.1			87.6

1. Determine the control limits for the mean and the range.(Leave no cells blank - be certain to enter "0" wherever required. Round your answers to 2 decimal places.)

Mean of sample means =	87.38	LCL =	86.57	UCL =	88.19
Mean of sample ranges =	1.4	LCL =	0	UCL =

Answer 1