The LSD Multiple Comparison Test results arebelow:Multiple ComparisonsDependent Variable: Weight_GainsLSDMeanDifference (I-J)95% Confidence Interval(1) Group 0) GroupStd. ErrorSig.Lower Bound Upper BoundDiet ADiet B.4000.2234.092-.074.874Diet C.5200.2234.033.046.994Diet D.0000.22341.000-.474.474Diet BDiet A-.4000.2234.092-.874.074Diet C.1200.2234.599-.354.594Diet D-.4000.2234.092-.874.074Diet CDiet A-.5200.2234.033-.994-.046Diet B-.1200.2234.599-.594.354Diet D-.5200.2234.033-.994-.046Diet DDiet A.0000.22341.000-.474.474Diet B.4000.2234.092-.074.874Diet C.5200.2234.033.046.994*. The mean difference is significant at the 0.05 level.Select all answer that are correct about thistest.None of these choices are correct.O Do not reject the null hypothesis. All means areequal. I do not need the LSD multiple comparisontests.F-Critical Value is 3.24O F-Critical Value is 2.25O Reject the null hypothesis. All means are notequal. Diet C is different compared to Diet A andD. A study is developed to examine the effects ofvitamin and milk supplements on infant weightgain. Four diet plans are considered: Diet Ainvolves a regular diet plus the vitaminsupplement, Diet B involves a regular diet plusthe special milk formula, Diet C is our controldiet (ie. no restrictions or special considerations,and Diet D involves a regular diet plus thevitamin and the special milk formula. Twentyinfants are selected for the investigation andeach is randomized to one of the fourcompeting diet programs.The descriptive statistics for the 4 groups areshown below:Weight_GainsStd.DeviationNMeanStd. ErrorDiet A2.080.4324.1934Diet B1.680.3768.1685Diet C1.560.3362.1503Diet D52.080.2387.1068Total201.850.4033.0902An ANOVA was done at the 0.05 level ofsignificance to test HO: All group means areequal vs HA: atleast one group mean is noteequal. The ANOVA showed the F statistic tobe 2.92.The LSD Multiple Comparison Test results arebelow:

Solution: Given information: k= 4 groups n=20 total observations

Answered: A study is developed to examine the…

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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High levels of cholesterol in the blood are associated with higher risk of heart attacks. Will using a drug to lower blood cholesterol reduce heart attacks? The Helsinki Heart Study recruited middle-aged men with high cholesterol but no history of other serious medical problems to investigate this question. The volunteer subjects were assigned at random to one of two treatments: 2051 men took the drug gemfibrozil to reduce their cholesterol levels, and a control group of 2030 men took a placebo. During the next five years, 56 men in the gemfibrozil group and 84 men in the placebo group had heart attacks. Is the apparent benefit of gemfibrozil statistically significant? What is the value of the combined proportion (c)? Round to four decimal places
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High levels of cholesterol in the blood are associated with higher risk of heart attacks. Will using a drug to lower blood cholesterol reduce heart attacks? The Helsinki Heart Study recruited middle-aged men with high cholesterol but no history of other serious medical problems to investigate this question. The volunteer subjects were assigned at random to one of two treatments: 2051 men took the drug gemfibrozil to reduce their cholesterol levels, and a control group of 2030 men took a placebo. During the next five years, 56 men in the gemfibrozil group and 84 men in the placebo group had heart attacks. Is the apparent benefit of gemfibrozil statistically significant? State the Null and Alternative Hypotheses. Make sure to define your parameters.

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