The Money Pit Mortgage Company is interested in monitoring the performance of the mortgage process. Fifteen samples of five completed mortgage transactions each were taken during a period when the process was believed to be in control. The times to complete the transactions were measured. The Money Pit Mortgage Company made some changes to the process and undertook a process capability study. The following data were obtained for 15 samples of size 5. Based on the individual observations, management estimated the process standard deviation to be 3.65 (days) for use in the process capability analysis. The lower and upper specification limits (in days) for the mortgage process times were 11 and 23. Sample 1 2 Mean 13 15 Range 12 15 3 11 6 4 5 19 16 13 12 12 6 7 8 15 20 19 9 16 10 17 16 10 17 13 11 12 13 14 19 8 12 8 384 18 14 a. Calculate the process capability index and the process capability ratio values. The process capability index Cpk =. (Enter your response rounded to three decimal places.) 17 12 15 12 13

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The Money Pit Mortgage Company is interested in monitoring the performance of the mortgage process. Fifteen
samples of five completed mortgage transactions each were taken during a period when the process was believed to be
in control. The times to complete the transactions were measured.
The Money Pit Mortgage Company made some changes to the process and undertook a process capability study. The
following data were obtained for 15 samples of size 5. Based on the individual observations, management estimated the
process standard deviation to be 3.65 (days) for use in the process capability analysis. The lower and upper
specification limits (in days) for the mortgage process times were 11 and 23.
Sample 1 2 3 4 5 6 7 8
Mean 13 15 11 19 16 15 20 19
Range 12 15 6 13 12 12 10 17
a. Calculate the process capability index and the process capability ratio values.
Th process capability index Cpk
9 10 11 12 13 14 15
16 17 19
16 13 8
12 18
8
14
(Enter your response rounded to three decimal places.)
17 12
12
13
Transcribed Image Text:The Money Pit Mortgage Company is interested in monitoring the performance of the mortgage process. Fifteen samples of five completed mortgage transactions each were taken during a period when the process was believed to be in control. The times to complete the transactions were measured. The Money Pit Mortgage Company made some changes to the process and undertook a process capability study. The following data were obtained for 15 samples of size 5. Based on the individual observations, management estimated the process standard deviation to be 3.65 (days) for use in the process capability analysis. The lower and upper specification limits (in days) for the mortgage process times were 11 and 23. Sample 1 2 3 4 5 6 7 8 Mean 13 15 11 19 16 15 20 19 Range 12 15 6 13 12 12 10 17 a. Calculate the process capability index and the process capability ratio values. Th process capability index Cpk 9 10 11 12 13 14 15 16 17 19 16 13 8 12 18 8 14 (Enter your response rounded to three decimal places.) 17 12 12 13
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