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(Solved): A machine is used to fill cans with motor oil additive. A single sample can is selected every hour ...



A machine is used to fill cans with motor oil additive. A single sample can is
selected every hour and the weight of the can Sample
Number
1
2
3
4
5
6
7
8
9
10
11
12
8.00
8.01
8.02
8.01
8.00
8.01
8.06
8.07
8.01
8.04
8.02
8.01
Sample
Number
13
14
15
1

A machine is used to fill cans with motor oil additive. A single sample can is selected every hour and the weight of the can is obtained. Since the filling process is automated, it has very stable variability, and long experience indicates that ?= 0.05 oz. The individual observations for 24 hours of operation are shown in Table 3. The management is interested in detecting the small shift in mean for a sample width of 5. Choose appropriate control chart, calculate the control limits and construct the control chart? (10+5Marks) Table d Sample Number 1 2 3 4 5 6 7 8 9 10 11 12 8.00 8.01 8.02 8.01 8.00 8.01 8.06 8.07 8.01 8.04 8.02 8.01 Sample Number 13 14 15 16 17 18 19 20 21 22 23 24 8.05 8.04 8.03 8.05 8.06 8.04 8.05 8.06 8.04 8.02 8.03 8.05


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The most appropriate control chart is Xbar (Mean) Chart . Sample Size =5 Standard Deviation () =0.05 A2=0.577 d2=2.326 Sample No x 1 8.00 2 8.0
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