Should corrective action be taken

Assignment Help Basic Statistics
Reference no: EM131372668

At Armco's steel plant in Middletown, Ohio, statistical quality-control methods have been used very successfully in controlling slab width on continuous casting units. The company claims that a large reduction in the steel slab width variance resulted from the use of these methods. Suppose that the variance of steel slab widths is expected to be 156 (squared units).

A test is carried out to determine whether the variance is above the required level, with the intention to take corrective action if it is concluded that the variance is greater than 156. A random sample of 25 slabs gives a sample variance of 175. Using α = 0.05, should corrective action be taken?

Reference no: EM131372668

Questions Cloud

Analysis on the good practices of other hotels : Identify and explain which dimension(s) the domestic and international guests generally considered "satisfied" or "unsatisfied" when they used the Grand Hotel's services.
Conduct appropriate hypothesis test and state the conclusion : Suppose that this economist looks at a random sample of 250 office building properties in San Jose and finds that 12 are vacant. Using α = 0.05, conduct the appropriate hypothesis test and state your conclusion. What is the p-value?
Calculate the conditional profit in relation to various : A company needs to increase its production beyond its existing capacity. It has narrowed the alternatives to two approaches to increase the production capacity: (a) expansion, at a cost of $ 8 million, or (b) modernization at a cost of $ 5 million. B..
Few suppliers strategy is the high cost of changing partners : The usual purpose of an R-chart is to signal whether there has been a change in the number of defective items in a sample. Continuous Improvement or Kaizen is based on the philosophy that any operation or process can be improved or made better. ISO 9..
Should corrective action be taken : A test is carried out to determine whether the variance is above the required level, with the intention to take corrective action if it is concluded that the variance is greater than 156. A random sample of 25 slabs gives a sample variance of 175...
What actions you take to provide sustainable supply of water : What role does population growth play in water supply problems? What three actions would you take to provide sustainable supplies of water for the world's people? (100 words)
Carry out the test and state the conclusion : A random sample of 1,500 households shows that 1,380 are rental units. Carry out the test, and state your conclusion. Use an αof your choice.
How do these new facts affect current stakeholders : Identify the various stakeholder groups of the Monsanto Company. Update any dated facts in this case with more current information. How do these new facts affect current stakeholders?
Work for company that manufactures bicycles : Suppose that you work for a company that manufactures bicycles. Although you make some of your own parts, you buy others. At a meeting you recently attended two managers were debating the virtues of having multiple suppliers for the brake assembly. O..

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