Confidence interval for the population mean turnaround time

Assignment Help Basic Statistics
Reference no: EM131689409

Question: Southside Hospital in Bay Shore, New York, commonly conducts stress tests to study the heart muscle after a person has a heart attack. Members of the diagnostic imaging department conducted a quality improvement project to try to reduce the turnX around time for stress tests. Turnaround time is defined as the time from when the test is ordered to when the radiologist signs off on the test results. Initially, the mean turnaround time for a stress test was 68 hours. After incorporating changes into the stress-test process, the quality improvement team collected a sample of 50 turnaround times. In this sample, the mean turnaround time was 32 hours, with a standard deviation of 9 hours (Extracted from E. Godin, D. Raven, C. Sweetapple, and F. R. Del Guidice, Faster Test Results, Quality Progress, January 2004, 37(1), pp. 33 39).

a. Construct a 95% confidence interval for the population mean turnaround time.

b. Interpret the interval constructed in (a).

c. Do you think the quality improvement project was a success? Explain.

Reference no: EM131689409

Questions Cloud

Develop confidence interval for the population mean : Construct a 95% confidence interval for the population mean, based on the numbers 1, 2, 3, 4, 5, 6, and 20. Change the number 20 to 7 and recalculate.
Discuss about the gestalt laws of organization : Basic principles by which we organize bits and pieces of information (stimuli) are known as the Gestalt laws of organization
Estimate the mean value of all greeting cards : Assuming a normal distribution, construct a 95% confidence interval estimate of the mean value of all greeting cards in the store s inventory.
What are the key elements of tesla motors strategy : What are the key elements of Tesla Motors' strategy?Are you impressed by the strategy Elon Musk has crafted for Tesla? Why or why not?
Confidence interval for the population mean turnaround time : Southside Hospital in Bay Shore, New York, commonly conducts stress tests to study the heart muscle after a person has a heart attack.
Describe the five major steps in conducting jad sessions : What is JAD session? Describe the five major steps in conducting JAD sessions. List and briefly discuss three kinds of feasibility analysis.
Implementation of global cybersecurity policy : Take two or more assessments (ethical, political, social, and/or cultural) addressed above and discuss the interconnectedness of these issues surrounding
Preparing the adjusting journal entries : Display and print the Trial Balance report before preparing the adjusting journal entries (April 1, 2017-April 30, 2017)
Social and cultural issues associated with future global : Discuss the social and cultural issues associated with Future Global Cyber Security technology. Specifically discuss the social and cultural issues associated.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Statistics-probability assignment

MATH1550H: Assignment:  Question:  A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..

  What is the least number

MATH1550H: Assignment:  Question:     what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?

  Determine the value of k

MATH1550H: Assignment:  Question:     Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form

  What is the probability

MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?

  Binomial distributions

MATH1550H: Assignment:  Questions:  Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.

  Caselet on mcdonald’s vs. burger king - waiting time

Caselet on McDonald’s vs. Burger King - Waiting time

  Generate descriptive statistics

Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.

  Sampling variability and standard error

Problems on Sampling Variability and Standard Error and Confidence Intervals

  Estimate the population mean

Estimate the population mean

  Conduct a marketing experiment

Conduct a marketing experiment in which students are to taste one of two different brands of soft drink

  Find out the probability

Find out the probability

  Linear programming models

LINEAR PROGRAMMING MODELS

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