A process that is considered to be in control measures an ingredient in ounces. Below are the last 10 samples (each of size n = 5) taken. The population process standard deviation is 1.64.

Samples
1	2	3	4	5	6	7	8	9	10
11	13	12	9	12	10	11	14	7	9
10	12	8	9	9	10	12	10	8	12
9	12	9	12	10	7	11	9	11	9
10	13	11	9	11	12	7	9	11	9
13	11	9	9	9	10	9	7	8	13

b) With z = 3, the control limits for the mean chart are:

UCLx = _______ ounces (round your response to three decimal places).

LCLx = _________ ounces (round your response to three decimal places).

c) The control limits for the R-chart are:

UCLR = __________ ounces (round your response to three decimal places).

LCLR =____________ ounces (round your response to three decimal places).

d) Based on the x-chart, is one or more samples beyond the control limits? YES OR NO?

Based on the R-chart, is one or more samples beyond the control limits? YES OR NO?

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