THE MARKETING MANAGER OF A LARGE MULTINATIONAL CORPORATION IS CONCERNED THAT SOME SALESPERSONSPERFORM VERY WELL AND OTHERS QUITE POORLY. TO HELP ANALYZE THE PROBLEM HE DRAWS A RANDOM SAMPLE OF20 SALESPERSONS, DETERMINES THEIR COMMISSION INCOMES (IN THOUSANDS OF RANDS), AND CALCULATES THEFOLLOWING STATISTICS: = R37.2, AND S= R7.8. DO THESE STATISTICS PROVIDE SUFFICIENT EVIDENCE AT THE 5%SIGNIFICANCE LEVEL TO CONCLUDE THAT THE POPULATION VARIANCE EXCEEDS R35 MILLION²?Ho:H₁:Rejection region:Test statistic:Decision:Conclusion:

The following information has been provided: n=20x¯=37.2s=7.8 The level of significance is α=0.05.…

Answered: THE MARKETING MANAGER OF A LARGE…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Explain what would happen to the F ratio of this analysis of variance if 2 points were added to each score in Finals only group? (Note: The new scores would be 2, 4, 2, and 4 with T = 12 and SS = 4.)
13. According to a recent random sample of 31 Canadian Football League players, the mean age was approximnately 27.71 years with a variance of 2.59. Lonnie Lobowsky of the Yukon Argonauts has an age with Z-score equivalent to 2.21. Determine his age. A. 31 B. 37 C. 33 D. 35 E. 28 -
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Please answer part d), e) and f)
"A large candy manufacturer produces, packages and sells packs of candy targeted to weigh 52 grams. A quality control manager working for the company was concerned that the variation in the actual weights of the targeted 52-gram packs was larger than acceptable. That is, he was concerned that some packs weighed significantly less than 52-grams and some weighed significantly more than 52 grams. In an attempt to estimate the variance of the weights of all of the 52-gram packs the manufacturer makes, he took a random sample of n = 20 packs off of the factory line. The random sample yielded a sample variance of 3.5 grams. Use 90% confidence level. What is the confidence interval for the variance of the weight of the candy?"
Post-hoc tests are necessary for an analysis of variance comparing only two treatment conditions. t or f
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Plz answer both questions 01) 3. In a larger-scale replication study, 60 subjects were randomly assigned to one of 3 treatment conditions (0 ml., 5 ml., or 10 ml. of melatonin). After treatment, the total sum of squares was found to be 6504.75. In addition, 32% of the variance between the groups' measured depression could be accounted for by the different dosages of melatonin they had been administered. Does this study show significant differences between the groups' mean depression scores (α ≤ .025) 4. Forty eight subjects were randomly assigned to one of 4 treatment conditions in a study of different methods of coping with statistics exam anxiety. After the experiment, 12 subjects remained in group 1, 8 in group 2, 10 in group 3, and 10 in group 4. The mean anxiety score of group 1 was found to be 5.5 points higher than the mean of group 2, 3.5 points higher than the mean of group 3, 5.3 points higher than the mean of group 4, and 3.3 points higher than the grand mean.…

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