In: Statistics and Probability

The AMS technical services department has embarked on a quality improvement effort. Its first project relates to maintaining the target upload speed for its Internet service subscribers. Upload speeds are measured on a standard scale which the target value is 1.0. Data collected over the past year indicate that the upload speed is approximately normally distributed, with a mean of 1.005 and a standard deviation of 0.10. Each day, one upload speed is measured. The upload speed is considered acceptable if the measurement on the standard scale between 0.95 and 1.05.

1. Assuming that the distribution has not changed from what it was in the past year, what is the probability that the upload speed is

a. less than 1.0?

b. between 0.95 and 1.0?

c. between 1.0 and 1.05?

d. less than 0.95 or greater than 1.05?

2.) The objective of the operations team is to reduce the
probability that the upload speed is below 1.0. Should the team
focus on process improvement that increases the mean upload speed
1.05 or on process improvement that reduces the standard deviation
of the upload speed to 0.075? Explain

**Answer:-**

**Given
That:-**

The AMS technical services department has embarked on a quality improvement effort. Its first project relates to maintaining the target upload speed for its Internet service subscribers. Upload speeds are measured on a standard scale which the target value is 1.0. Data collected over the past year indicate that the upload speed is approximately normally distributed, with a mean of 1.005 and a standard deviation of 0.10. Each day, one upload speed is measured. The upload speed is considered acceptable if the measurement on the standard scale between 0.95 and 1.05.

**1. Assuming
that the distribution has not changed from what it was in the past
year, what is the probability that the upload speed
is**

**a. less than
1.0?**

P(X < 1)

= 0.4801

**P(X < 1) = 0.4801**

**b. between 0.95
and 1.0?**

P(0.95 < X < 0.1)

= 0.4801 - 0.2912

= 0.1889

**P(0.95 < X < 0.1) = 0.1889**

**c. between 1.0
and 1.05?**

P(1 < X < 1.05)

= 0.6736 - 0.4801

= 0.1935

**P(1 < X < 1.05) = 0.1935**

**d. less than
0.95 or greater than 1.05?**

P(X < 0.95) + p(X > 1.05)

= 0.2912 + (1 - 0.6736)

= 0.6176

**P(X < 0.95) + p(X > 1.05) = 0.6176**

**2.) The
objective of the operations team is to reduce the probability that
the upload speed is below 1.0. Should the team focus on process
improvement that increases the mean upload speed 1.05 or on process
improvement that reduces the standard deviation of the upload speed
to 0.075?**

If mean increases to 1.05, then the probability will be

P(X < 1)

= 0.3085

**P(X < 1) = 0.3085**

If the standard deviation reduces to 0.075, then the probability will be

P(X < 1)

= 0.4721

**P(X < 1) = 0.4721**

The probability in part(a) will be very less deviate from the
probability by reducing the standard deviation and more deviate
from the probability by increasing the mean.

Since the probability by increasing the mean will be less than the probability by reducing the standard deviation, so the team should focus on process improvement that increases the mean upload speed.

Continuing the quality improvement effort first described in the
chapter 6 Managing Ashland Multicomms services case, the target
upload speed for AMS internet service subscribers has been
monitored.As before, upload speeds are measured on a standard scale
in which the target value is 1.0. Data collected over the past year
indicate that the upload speeds are approximately normally
distributed, with a mean of 1.005 and a standard deviation of
0.10.
Each day, at 25 random times, the upload speed is...

Increases in the prices of services due to improvement in its
quality indicate a(n) _____. a. decline in productivity. b. decline
in real GDP. c. increase in output. d. decline in manufacturing
output. e. increase in technological progress.
Suppose a bank has $850 million in vault cash and a deposit in
the Fed of $100 million. If the bank’s required reserves equal $500
million, then the bank has excess reserves of: a. $100 million. b.
$350 million. c. $400 million....

Managing Ashland MultiComm ServicesThe Ashland MultiComm
Services (AMS) marketing department wants to increase subscriptions
for its 3-For-All telephone, cable, and Internet combined service.
AMS marketing has been conducting an aggressive direct-marketing
campaign that includes postal and electronic mailings and telephone
solicitations. Feedback from these efforts indicates that including
premium channels in this combined service is a very important
factor for both current and prospective subscribers. After several
brainstorming sessions, the marketing department has decided to add
premium cable channels as...

The U.S. Department of Health and Human Services Agency for
Healthcare Research and Quality has identified seven Portfolios of
Research. The full list can be viewed at
http://www.ahrq.gov/cpi/portfolios/index.html
2. Two of the Portfolios of Research that are of key importance
to this week's learning are
(1) Health Information Technology and (2) Patient Safety.
Describe how these two Portfolios of Research relate to the
ONC's Health Information Technology Patient Safety Action and
Surveillance Plan: June 2013 (Washington, DC: Office of the...

Instructions: You are to select a topic on continuous quality
improvement for your final project. The improvement must be in the
health care sector and involve multiple disciplines, such as health
information technology, laboratory, radiology, infection control,
etc. You may select a real process or a hypothetical one. Your
project selection is due by the end of this unit. Your project
selection should include the following: · State the title of your
quality improvement project. · Describe your topic by...

Lowes, a home improvement retailer, has authorized its
marketing research department to make a study of customers who have
been issued a Lowes charge card. The marketing research
department hopes to identify the significant variables that explain
the variation in purchases. Once these variables are determined,
the department intends to try to attract new customers who would be
predicted to make a high volume of purchases. Twenty-five customers
were selected at random, and values for the following variables
were recorded:...

Explain statistical process control(SPC) and how it
relates to continuous process improvement. Relate Demmings 14
Quality Points and explain how statistical data can assist with
quality improvements efforts.

When conducting healthcare services quality improvement
initiatives, why it is important to integrate Structure, Process,
and Outcome quality assurance measures? Which of these measures
will help you evaluate the impact of the quality
initiative?

PERFORMANCE AND QUALITY EVALUATION AND IMPROVEMENT OF THE
HIM DEPARTMENT
SCENARIO: You have just been hired as the HIM Quality
Coordinator. This is a new position in the HIM Department. Your job
tasks read as follows:
• Develop and implement the HIM Department Quality Plan
• Develop data collection, date analysis, and data presentation
tools for use in the quality plan.
• Report findings to the HIM Director, Administration, Medical
Staff Director, and Medical Staff Committees as appropriate.
• Other...

In this assignment, you will select a program, quality
improvement initiative, or other project from your place of
employment. Assume you are presenting this program to the board for
approval of funding. Write an executive summary (850-1,000 words)
to present to the board, from which they will make their decision
to fund your program or project. The summary should include: 1. The
purpose of the program or project. 2. The target population or
audience. 3. The benefits of the program...

ADVERTISEMENT

ADVERTISEMENT

Latest Questions

- Model of tree growth, support with graph. (a) Discuss the biological decision rule to harvest the...
- Case for Analysis: Change at Defence Research and Development—DRDC Toronto DRDC Toronto is a research centre...
- You are a federal prosecutor in Washington, DC, assigned to the following case: Robert is a...
- Suppose the followings represent the goods market: C = C0 + c(Y-T) (Consumption Function) I =...
- To what degree is the ‘invisible hand’ working today as Smith envisioned; are today’s business activities...
- Per the text book, OB experts have proposed 12 mechanisms or levers for changing organizational culture....
- Write a function called printChList that takes as its parameters a character array, its size, and...

ADVERTISEMENT