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
prove standard deviation of natural natural numbers

BCBSRI was able to reduce MSD related Workers Compensation cases with lost workdays by implementing a New Ergonomic Program in March 2000 and increasing workstation evaluations. Ex

Cluster Sampling This method is also known as multi stage sampling .Under this method random selection is made of the ultimate or final units from a given stratum. The sampling

The following dataset is from a study of the effects of second hand smoking in Baltimore, MD, and Washington, DC. For the 25 children involved in this study the outcome variable is

Test the following claim. Identify the null hypothesis, alternative hypothesis, test statistic, critical value(s), conclusion about the null hypothesis, and final conclusion that

Each section of the SAT test is supposed to be distributed normally with a mean of 500 and a standard deviation of 100. Suppose 5 students in a class took the SAT math test. They r

Universe or Population The word universe as used in statistics denotes the aggregate from which a sample is to be taken. According to Simpson and Kafka, a universe or populatio

Active Control Equivalence Studies (ACES) Clinical trials the field in which the object is easy to show that the new treatment is  as good as the existing treatment. Such type

The box plot displays the diversity of data for the income; the data ranges from 20 being the minimum value and 1110 being the maximum value. The box plot is positively skewed at 4

Explain any two applications of statistics