1.510 points Provicus Answers Obesity and being overweight is caused by cxcessiv

Question

1.510 points Provicus Answers Obesity and being overweight is caused by cxcessive adipose tissucs, or body fat. Visceral fat, surrounding internal organs, is cearly associated with heart disease and diabctes. Subcutancous fat, found just below the skin (often in the buttocks and thighs), is not. A study cxamined the impact of cxcrcise type on visceral and subcutancous fat. Overweight, sedentary, but otherwise discase-free adults were randomly assigned to 3 exercise regimens for cight months: acrobic training, resistance training, acrobic plus resistance training. All exercise sessions were supervised to ensure correct completion. The subjects' body fat amount was assessed with computed tomography imaging (in cm2 at the beginning and end of the experiment. The study report contains the following information about the visccral fat reduction (in cm) achicved by the subjects in cach group (note that the reduction is indicated as a positive valuc) My Notes Acrobic training Resistance training Aerobic plus resistance training 32 28.3 3 37 25.6 32 41 8.1 51 (a) Do the standard deviations satisfy the rule of thumb for safe use of one-way ANOVA F-test? Yes, the largest sample standard deviation is less than twice as large as the smallest sample standard deviation. No, the largest sample standard deviation is more than twice as large as the smallest sample standard deviation. )The report does not provide the distributions of subcutaneous fat reduction. ANOVA F-test is nonetheless safe for these data. Why? O The standard deviation has Normality O The populations have the same standard deviation. O The sample sizes are small. The sample sizes are large (e) Cakulate the overall mean responsex 20.x(round to 2 decimal places) (d) Complete the one-way ANOVA table (round your answer to two decimal places when it applies) df S.S M.S Between Groups 2 Within Groups10 C.Total 9168.74 4584.37 108 190248.74 (e) Perform ANOVA F-test of hypotheses: Hg: All three population means of subcutaneous fat reductions are equal versus Ha: Not all three population mecans of subcutancous fat reductions are equal Find the test statistic F ratio from the ANOVA table and estimate the P-value. P-value 0

Explanation / Answer

from above

c) overall mean =19.86

d)

e)

0.05< p <0.10

i ni Xi Si^2 ni*(Xi- grand mean)^2 (ni-1)*Si^2 aerobic 37 25.6 1024.000 1217.903 36864.000 resistance 41 8.1 2601.000 5672.832 104040.000 both 32 28.3 1296.000 2278.002 40176.000 Weighted mean 19.863 9168.737 181080.000 SSG SSE

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