The manager of an ez lube service station has reduced an

Assignment Help Other Subject
Reference no: EM13473463

The number of components produced per hour is normally distributed with a mean of 25 and a standard deviation of 4.

a) What percentage of the time does a lathe produce more than 27 components per hour?

The manager of an EZ lube service station has reduced an oil-change job to a science and wants to keep it that way. The manager constantly monitors the performance of his staff. This week, 15 oil-change jobs were sampled with a sample mean of 9.8 minutes per job. Experience has shown that the times follow a normal distribution, and the standard deviation of the population is known to be 1.2 minutes. Based on this week's sample, construct a 90% confidence interval for the population mean (average time for an oil-change job).

An apartment-finder service would like to estimate the average cost of a one-bedroom apartment in Denton, Texas. A random sample of 41 apartment complexes yielded a mean of $310 with a standard deviation of $29. Construct a 90% confidence interval for the mean cost of one-bedroom apartments in Denton, Texas.

A bank manager would like to estimate the mean deposit by a customer into a savings account to within $500. If the deposits into savings accounts are considered to be normally distributed with a standard deviation of $1,250, what sample size would be necessary at a 90% confidence level to determine the same?

Reference no: EM13473463

Questions Cloud

The readership of a certain magazine has the following : the readership of a certain magazine has the following characteristics 30 are younger than 26 20 are older than 45 55
Analyze the elements of media choices for conducting an : analyze the elements of media choices for conducting an internal total rewards campaign to determine which is hardest
Write the name of six different factors which might be : in a time study of a process the average time to complete a unit was 36.5 minutes the performance rating of the worker
The question to address in your essay is this should we : 900 words apa formatmuch of technology in the workplace seeks to make the job easier for the worker. often this
The manager of an ez lube service station has reduced an : the number of components produced per hour is normally distributed with a mean of 25 and a standard deviation of 4.a
Explain the difference between ellis island and angel : explain the difference between ellis island and angel island. if you were an immigrant which would you prefer to be
Describe how cultural nonverbal differences might adversely : question 1 what are the different types of nonverbal communication?question 2 discuss how cultural nonverbal
Assuming the 384 rate continues how much will she have in : diane works at a public university. she contributes 625 at the end of each month to her retirement fund. for the past
A company is concerned about diameter of one of its steel : a company is concerned about the diameter of one of its steel pipes.nbsp they took 10 daily samples with 10

Reviews

Write a Review

Other Subject Questions & Answers

  Legacy system with an ehr-based solution

A local company is going to replace its legacy system with an eHR-based solution to improve recruiting and hiring efforts, both internally and externally.

  Lower lobe of the right lung

Describe all major structures passed by or thgrough when traveling from the rt femoral vein to the lower lobe of the right lung.

  Perhaps better connected among european aristocracy

Discuss the similarities and differences in Mozart’s reception by Viennese concert-goers and Haydn’s reception by London audiences. Which composer (Haydn or Mozart) was perhaps better connected among European aristocracy?

  The older vps with whom he works see him as impulsive

analyze the following scenariosbob jackson is 44. he is the manager of operations for a mid-sized company. he is always

  What trends in the environmental forces

What trends in the environmental forces (social, economic, technological, competitive, and regulatory) work for and/or work against Rollerblade's potential growth in the 21st century?

  Clinical situation of experiencing ptsd

Lets apply this to a clinical situation. How could the impact that emotions have on memory affect a client who is experiencing PTSD (posttraumatic stress disorder)?

  Psychological tests of abnormal behavior

Marsha works for the American Psychological Association. She evaluates I.Q. tests, Personality Inventories, and psychological tests of abnormal behavior. She is most likely a _____________ psychologist.

  What are ways that health care laws or regulations affect

200-300 words orginal work referencewhat are ways that health care laws or regulations affect your health care

  Walk into the shade under a tall tree

You now walk into the shade under a tall tree. You notice that you can still see the light bulb in your hand. Remembering that light travels in a straight line,explain why you can still see the bulb while standing in the shade?

  What kind of marketing channel functions

What kind of marketing channel functions can be performed over the Internet? Why do you think so? Decide which distribution intensity level – intensive, selective, or exclusive – is used for the following products, and why? (a) Land Rover sport utili..

  Nonconventional monetary policy

Discuss effectiveness of the nonconventional monetary policy adopted by the Fed during the 2008 financial crisis and provide your opinion about the validity of this policy.

  Essentialist versus the constructionist

Compare and contrast the “essentialist” versus the “constructionist” paradigms with respect to sexual identity.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd