Question: An article in Quality Engineering [2012, Vol. 24(1)] described an experiment on a grinding wheel. The following are some of the grinding force data (in

An article in Quality Engineering [2012, Vol. 24(1)] described an experiment on a grinding wheel. The following are some of the grinding force data (in N) from this experiment at two different vibration levels.

242, 249, 235, 250, 254, 244, 258, 311, 237, 261, 314, 252 High 302, 421, 419, 399, 317, 311, 350, 363, 392, 367, 301, 3

(a) Is there evidence to support the claim that the mean grinding force increases with the vibration level?

(b) Find a 95% confidence interval for the difference in the mean grinding force for the two vibration levels.

(c) Is the value zero contained in the 95% confidence interval? Explain the connection with the conclusion you reached in part (a).

(d) Do normal probability plots of grinding force indicate any violations of the assumptions for the tests and confidence interval that you performed?

242, 249, 235, 250, 254, 244, 258, 311, 237, 261, 314, 252 High 302, 421, 419, 399, 317, 311, 350, 363, 392, 367, 301, 302 Low

Step by Step Solution

★★★★★

3.40 Rating (169 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a 1 The parameter of interest is the difference in mean grinding force between vibration l... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Applied Statistics and Probability Questions!

An article in Quality Engineering (Vol.4, 1992, pp. 487-495) presents viscosity data from a batch chemical process. A sample of these data is presented in Table 4E.2. (read down, then across). a....

Cross-linker Exercise 13-14. Use Î± = 0.05. (a) Apply Fishers LSD method with Î± = 0.05 and determine which levels of the factor differ. (b) Use the graphical method to...

Consider the grinding force data in Exercise 10-40. Is there any indication that the variances of grinding force are different at the two different levels of temperature? Exercise 10-40 An article in...

Answer Q10.2.13 and Q10.2.14 stepwise please c. Is the value zero contained in the 95% confidence inter- val? Explain the connection with the conclusion you reached in part (a). d. Do normal...

...Thanks. 14-36. + Consider the data from the first replicate of Track cross-country skier (10 or 20 min), and delay between Exercise 14-14. the time of juice intake (0 or 20 min) and the beginning...

Student Name Enrolled ID. No MS 7004 Independent Study MS 7002 Thesis 1. Title: 2. Type of Research: 3. Background of the Research: 4. Research Objectives: 5. Research Questions: 6. Variables:...

Category Creativity Techniques A to Z This A to Z of Creativity and Innovation Techniques, provides an introduction to a range of tools and techniques for both idea generation (Creativity) and...

.....Please help. 14-63. + An article in Rubber Age (1961. Vol. 89. pp. 453- (a) Fit a second-order response surface model to the data. 458) describes an experiment on the manufacture of a product...

American Journal of Business Antecedents of consumer animosity and the role of product involvement on purchase intentions Ji Eun Park, Sung-Joon Yoon, Article information: To cite this document: Ji...

.... Kindly help out 14-93 The rework time required for a machine was found to 14-95. Consider the following ANOVA table from a two-fac- depend on the speed at which the machine was run (A). the or...

(a) In the TEmn mode various field components can be written as follows: H, = Acos(k,x)sin (kyy), H = Bm sin(k,x)cos (k,y) H, = Bn cos(k,x) sin(k,y), E, = Bn cos(k,x)sin (k,y) Ey, = A m sin(kx)cos...

Consider the following bases B, C and ? for P1: (a) Find each of the following P B? ? , P C? B and P C? ? (b) Verify that P C? ? = P C? B P B? ? B = {3x+1, 8x + 2} C = {x+1, x - 1} = {x, 1}.

A lock on a bank vault consists of three dials, each with 30 positions. To open the vault, each of the three dials must be in the correct position. a. How many different possible dial combinations...

1. If the economy is self-regulating, what happens if it is in a recessionary gap?

Are education and income related? To answer this question, a random sample of people was selected and each was asked to indicate into which of the following categories of education they belonged: 1....

Are richer (RINCOME) Americans pessimistic about their childrens chances of having a higher standard of living (KIDSSOL: When your children are at yourage will their standard of living be. . . 1....

Are richer people healthier? Conduct a test to determine whether there is enough evidence to infer that higher income (RINCOME) individuals are healthier (HEALTH: Would you say your own health, in...

The builtin discoveries data set is a time series giving the numbers of great inventions and scientic discoveries in each year from 1850 to 1959.We want to look at the drivers column of Seatbelts. We...

The 150 residents of the town of Wonderland were asked their age and whether they preferred vanilla, chocolate, or swirled frozen yogurt. The results are displayed below Age Chocolate Vanilla Swirl...

For a table manufacturing company, selling price for a table is $180.00 per Unit, Variable cost is $23.00 per Unit, rent is $3,233.00 per month and insurance is $299.00 per month. Company wants to...