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
10	13	13	10	11	9	10	14	9	11
8	12	9	11	10	11	12	15	7	12
9	13	11	10	9	9	11	8	13	9
10	14	10	9	12	12	8	10	11	7
11	12	9	9	11	10	10	7	8	12

Part 2

a) Standard deviation of the sampling means = ___ ounces (round your response to three decimal places).

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 overbarx-chart, is one or more samples beyond the control limits? Yes/No

Based on the R-chart, is one or more samples beyond the control limits? Yes/No