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Employees of MNM Corporation are about to undergo a retraining program. Management is trying to determine which of three programs is the best. They believe that the effectiveness of the programs may be influenced by sex. A factorial experiment was designed. You are given the following information.
Factor A: ProgramFactor B: SexMale FemaleProgram A 320 380240 300Program B 160 240180 210Program C 240 360290 380A.Set up the ANOVA Table.
Does the regression equation account for a significant portion of the variance in the cognitive scores? Use a=.05 to evaluate the F-ratio.
Set a value for the level of significance to be used in the test? After answering this question, what type of error would you suppose may result in that case?
Based on the equation of the least-squares line, we use software to predict the average number of home runs hit per game per team for the year 2001. We obtain the following.
The number of customers at a specialty meat store averages about 1500/day. The exact number varies from day to day. On Fridays before long weekends, the number of customers increases to about 3000. Which of the following statements is correct
1) The mean of the twenty male IQ scores is 115. Test the hypothesis that the mean of female IQ scores is less than 115. Note: This test is not comparing the mean IQ of females to that of males, it is simply using 115 as a comparison value. In the..
The number of arrivals per minute at a bank located in the central business district of a large city was recorded over a period of 200 minutes, with the following results:
Compare two models. Model #1 has an r-squared of .25 and an adjusted r-squared of .10. Model #2 has an r-squared of .20 and an adjusted r-squared of .14. Given this information, what model should you use?
Sketch the distributions involved, and (c) explain your answer to someone who is familiar with the t test for a single sample but not with the t test for independent means.
How large a sample must one take to be 90% confident that the estimate is within 0.05 of the true proportion of women over 55 who are widows?
Using least squares regression analysis, what would you estimate demand to be for each month next year?
68 of these drivers were wearing seat belts. We wish to find if these data give good reason to conclude that more than half of Hispanic female drivers in Boston wear seat belts.
Mean of 950 and a standard deviation of 200. nancy bright's sat score was 1390. what percentage of students have scores more than nancy bright?
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