Question: The artist '50 Cent' is experiencing problems with the consistency of download time when his fans download his music and decides to start sampling the

The artist '50 Cent' is experiencing problems with the consistency of download time when his fans download his music and decides to start sampling the download site and analyze using Statistical Process Control, data has been collected daily and is available below. Answer the following questions:

1. What is the X Bar-Bar (2 marks)?

2. What is the R Bar (2 marks)?

3. What is the UCLx (2 marks)?

4. What is the LCLx (2 marks)?

5. What is the UCLr (2 marks)?

6. What is the process capability (Cp) (3 marks)?

7. If the specifications/tolerances are: USL = 120 and the LSL = 100. What is the process actual performance (Cpk)? (3 marks)

8. Is the process capable (2 marks)?

9. Is the process in or out of control (2 marks)?

The artist '50 Cent' is experiencing problems

Tue Mon Apr 1 1 Wed Thu Fri Sat Sun Mon Tue Wed Thu Fri Sat Sun Mon Tue Wed Thu Fri Sat Sun Mon Tue Wed Thu Apr 2 Apr 3 Apr 4 Apr 5 Apr 6 Apr 7 Apr 8 Apr 9 Apr 10 Apr 11 Apr 12 Apr 13 Apr 14 Apr 15 Apr 16 Apr 17 Apr 18 Apr 19 Apr 20 Apr 21 Apr 22 Apr 23 Apr 24 Apr 25 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Sample Observation 1 Observation 2 Observation 3 Observation 4 Observation 5 119.0 96.0 115.0 92.0 95.0 116.0 111.0 119.0 102.0 101.0 103.0 94.0 115.0 102.0 122.0 101.0 92.0 108.0 98.0 107.0 100.0 120.0 98.0 101.0 99.0 105.0 94.0 108.0 109.0 97.0 116.0 104.0 92.0 106.0 107.0 118.0 111.0 114.0 112.0 119.0 94.0 115.0 112.0 104.0 109.0 118.0 112.0 108.0 98.0 107.0 106.0 119.0 112.0 111.0 101.0 96.0 120.0 106.0 104.0 119.0 115.0 99.0 111.0 115.0 109.0 106.0 95.0 119.0 118.0 91.0 120.0 105.0 96.0 111.0 105.0 104.0 120.0 118.0 111.0 115.0 101.0 117.0 109.0 113.0 101.0 113.0 99.0 118.0 115.0 109.0 106.0 98.0 92.0 98.0 117.0 111.0 116.0 117.0 125.0 111.0 105.0 99.0 111.0 118.0 113.0 93.0 109.0 110.0 119.0 99.0 118.0 118.0 91.0 90.0 99.0 106.0 115.0 85.0 114.0 115.0 113.0 97.0 96.0 91.0 113.0

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