Statistics assignment, Applied Statistics

To compare three brands of computer keyboards, four data entry specialists were randomly selected. Each specialist used all three keyboards to enter the same kind of text material for 10 minutes, and the number of words entered per minute was recorded. The data obtained are given in the table below.  Using these data, SST = 392.6667, SSB = 143.54833, and SSE = 2.6667.

                                                      Keyboard Brand

       Data Entry Specialist               A       B       C

                   1                                     77     67     63

                   2                                    71     62     59

                   3                                    74     63     59

                   4                                     67     57     54    

 

Use Tukey simultaneous 95 per cent confidence intervals to make pairwise comparisons of the keyboard brand effects on the mean number of words entered per minute.  Which keyboard brand maximizes the mean number of words entered per minute?

Posted Date: 3/8/2013 4:07:20 AM | Location : United States







Related Discussions:- Statistics assignment, Assignment Help, Ask Question on Statistics assignment, Get Answer, Expert's Help, Statistics assignment Discussions

Write discussion on Statistics assignment
Your posts are moderated
Related Questions
Large Sample Test for Mean A random sample of size n (n > 30) has a sample mean    . To test the hypothesis that the population mean μ has a specified value  μ 0  let us formu

1. Assume the random vector (Trunk Space, Length, Turning diameter) of Japanese car is normally distributed and the unbiased estimators for its mean and variance are the truth. For

What does the confidence level of a confidence interval tell you? Suppose that a population has mean, µ, and standard deviation, σ.  What does the central limit theorem tell us

Introduction to Probability A student is considering whether she should enroll in an MBA educational program offered by a well-known college. Among othe

Need help on my maths assignment


Consider an MBA program as a processing network where the flow unit consists of a student in the program.  Suppose the organizations that hire and promote MBAs are considered to be

Mean Absolute Deviation To avoid the problem of positive and negative deviations canceling out each other, we can use the Mean Absolute Deviation which is given by

How much would u charge for 4 questions

Find unlabeled data set test.txt and initial centroids data set centroids.txt in the archive, both files have the following format: [attribute1_value attribute2_value ...