Question: Given the following data, construct a 3 range control chart. Day of Sample Sample Values Saturday 22, 19, 20 Sunday 21, 20, 17 Monday 16,

Given the following data, construct a 3 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 Fridays results are 15, 14, and 21, is the process in control?

b.Construct a 3 means control chart and determine if the process is still in control on Friday.

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