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The Emporia Mortgage Company ( EMC ) is a medium - sized mortgage lender that has continued to do well, despite the meltdown in the
The Emporia Mortgage Company
EMC
is a medium
sized mortgage lender that has continued
to do well, despite the
meltdown
in the mortgage lending industry. Prior to the economic
downturn, EMC was a principal supplier of lending services to Southeastern Desert Homes, a
builder of residential communities in several major cities throughout the Southeastern United
States. Because it carefully selected clients who were able to make substantial down payments
for homes, and it avoided sub
prime or variable
rate mortgage lending, EMC has been shielded
from the effects of
toxic mortgages
on its balance sheet. In fact, EMC expanded its mortgage
refinancing and home remodeling credit operations to two shifts, as other lending company
s
ability to take on new clients contracted. Soon, they were working six days per week and hiring
additional workers.
Not long after EMC began its second shift operations, it received some complaints about long
mortgage processing times. This information alarmed Peter Purnell, CEO of Emporia Mortgage.
He had retired early from a bank in a cold Midwestern city and decided that he wanted to
relocate to the desert Southwest. He had hiked in the mountains and played golf during the first
six months, but then realized that he needed more of a challenge than the recreational activities
could provide. That was when he started Emporia Mortgage, using his experience in the
mortgage and home loan business. EMC, under Peter
s leadership, soon built a reputation as a
high
quality, if somewhat conservative, lender. Among other things, the company was known for
the capability of its well
trained and dedicated employees, who could generally complete the
loan process in around
workdays Thus, Peter never felt the need to consider formal process
control approaches. Now many customers were complaining that it took a week or two to close
on a loan, even with an excellent credit score. In view of the recent complaints, Peter suspected
that the rapid expansion to a full two
shift operation, the pressures to produce higher volumes,
and the push to meet requests from high
profit customers was causing a breakdown in their
quality.
On the recommendation of the V
P
for loan processing, Peter hired a quality consultant to train
the process managers and certain loan workers in statistical process control methods. As a trial
project, one process manager wanted to evaluate the capability of a critical operation that she
suspects might be a major source of the delays. The nominal specification for this processing
operation is
hours with a tolerance of
hours Thus, the upper and lower specifications are
LSL
hours and USL
hours The consultant suggested inspecting five consecutive
processing times, per loan worker, in the middle of each shift over a
day period and recording
the completion times for loans that they had finished processing. The table in the worksheet
EMC Case in the workbook EMC data.xls
found on the class website
shows
days
data
collected for each shift, by loan worker.
Assignment
Interpret the data in the EMC Case worksheet in the Excel workbook EMCData.xls
establish a
state of statistical control and evaluate the capability of the process to meet specifications.
Consider the following questions: What do the initial control charts tell you? Do any out
ofcontrol conditions exist? If the process is not in control, what might be the likely causes, based
on the information that is available? What is the process capability? What is the fraction of
nonconforming? What do the process capability indexes tell the company? Is EMC facing a
serious problem that it needs to address? How might the company eliminate the problems of
slow loan processing?
Hint: Use X bar and R charts, etc
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