Intervals for the proportion of motors

Assignment Help Business Management
Reference no: EM131021431

To evaluate the difference in the reliability of cooling motors for PCs from two suppliers, an accelerated life test is performed on 50 motors randomly selected from the warehouses of the two suppliers. Supplier A's motors are considerably more expensive in comparison to the motors of supplier B. Of the motors from supplier A, 37 were still running at the end of the test period, whereas only 27 of the 50 motors from supplier B were still running at the end of the test period.

a. Is there significant evidence that supplier A's motors are more reliable than supplier B's motors? Use α = .05 .

b. Use the Fisher exact test to test the research hypothesis that supplier A's motors are more reliable than supplier B's motors. Compare your conclusions with the conclusions reached in part (a).

c. Calculate 95% confidence intervals for the proportion of motors that passed the test for each supplier and for the difference in the two proportions. Interpret the results carefully in terms of the reliability of the two suppliers.

Reference no: EM131021431

Questions Cloud

Proportions in a multinomial experiment : Under what conditions is it appropriate to use the chi-square goodness-of-fit test for the proportions in a multinomial experiment? What qualification(s) might one have to make if the sample data do not yield a rejection of the null hypothesis?
Pesticide for controlling fire ants : A research entomologist is interested in evaluating a new chemical formulation for possible use as a pesticide for controlling fire ants. She decides to compare its performance relative to the most widely used pesticide on the market, AntKiller.
Design and implement an android application : Design and implement an Android application - Supporting different languages or different screen orientations (landscape and portrait) or different devices
Describe the government budget balance for given economy : Suppose you know that in this economy government spending is constant (autonomous) and equal to $30 million, investment spending is constant (autonomous) and equal to $40 million, and net exports are constant (autonomous) and equal to -$5 million...
Intervals for the proportion of motors : Calculate 95% confidence intervals for the proportion of motors that passed the test for each supplier and for the difference in the two proportions. Interpret the results carefully in terms of the reliability of the two suppliers.
Which of the following is not a general category of torts : Which of the following promises ordinarily need not be in writing to be enforceable?
What does the report mean by the burden of the tax : According to a Congressional Budget Office report, the burden of a carbon tax would fall isproportionately on low-income households. What does the report mean by the "burden" of the tax?
Pollen diagrams from dubh lochan : Pollen Diagrams from Dubh Lochan - Show the features of the vegetational history revealed by study of two sets of cores from Dubh Lochan
Discuss methods of measuring intellectual functioning : Provide a brief overview of at least two theories of intelligence related to the content of your selected articles to help your audience understand what intelligence testing accomplishes.

Reviews

Write a Review

Business Management Questions & Answers

  Explaining domain-specific metacognitive skills

Describe the ways in which domain-specific metacognitive skills is a factor for those involved and design techniques a designer should use considering metacognitive skills.

  Relationship between wellness and performance excellence

Explain what is the relationship between wellness and performance excellence and what are the differences between leadership and management?

  Degree of globalisation of an mne

Part A: Whether MNEs are truly global is a much debated subject. By identifying the factors that can influence the degree of globalisation of an MNE, discuss whether emerging economy MNEs (EMNEs) tend to be less globalised than developed economy M..

  Description of business decision makingresearch and select

description of business decision makingresearch and select 2 different statistical methods.for each statistical method

  Identify the costs involved in the globalization process

Identify the costs involved in the globalization process. What are the major issues? What companies seem to promote corporate responsibility in all aspects of their businesses?

  Which one of the following reports serves as the primary

which one of the following reports serves as the primary communication of audit findings?a.the auditors report on

  Illustrate what are some common methods of payment

Illustrate what are some common methods of payment and elucidate how are they used? Please answer in 225 words or less and cite URL or references used for class discussion.

  Explaining company overcome ethnocentricity

How does a company overcome ethnocentricity?

  Determine the successful performance of work organisations

Describe fully what you believe are the most significant factors That Are Likely To determine the successful performance of work organisations

  Major philosophical perspectives

Philosophical perspectives - Write a paper in which you research and identify three prevailing philosophical perspectives at work during the 20th century.

  Responsible for controlling the weight of a box of cereal

As a quality analyst you are also responsible for controlling the weight of a box of cereal. The Operations Manager asks you to identify the ways in which statistical quality control methods can be applied to the weights of the boxes.

  Team building and performance standards

Objective: Identify methodologies relevant to team building and performance standards for the functions of HRM as they pertain to organizing, controlling, planning, leading, and staffing

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