Given the following data, construct a three-sigma range control chart. Day of Sample Sample Values Saturday...

Given the following data, construct a three-sigma range control chart.

Day of Sample	Sample Values
Saturday	22,19,20
Sunday	21,20,17
Monday	16,17,18
Tuesday	20,16,21
Wednesday	23,20,20
Thursday	19,16,21

a. If Friday's results are 15,14,21 is the process in control?

b.Construct a three-sigma means control chart and determine if the process is still in control on Friday.

Expert Solution

Result:

Given the following data, construct a three-sigma range control chart.

Day of Sample	Sample Values
Saturday	22,19,20
Sunday	21,20,17
Monday	16,17,18
Tuesday	20,16,21
Wednesday	23,20,20
Thursday	19,16,21

a. If Friday's results are 15,14,21 is the process in control?

Quality Control Process Charts

	Sample size	3
	Number of samples	6

		Mean	Range
	Upper Control Limit, UCL	22.97	9.44
	Center	19.22	3.67
	Lower Control Limit, LCL	15.47	0.00

Range for Friday is 21-14=7 is within the control limits. Process is in control

b.Construct a three-sigma means control chart and determine if the process is still in control on Friday.

Mean for Friday is 16.67 is within the control limits. Process is in control

orchestra answered 3 years ago

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