TO Investigate the e ect of four treatments on c ange n body at mass coch o 74 m

Question

TO Investigate the e ect of four treatments on c ange n body at mass coch o 74 male subjects who cre over age 05 was ass ancd at rancom to one of the folowing four treatments: 1 p acebo growth hormone and Placebo steroid denoted by p p ·2 pacebo growth hormana" and the starold teatoatarona (deed by S). (3) growth hormona and placebo "starod (canotad by G P).and 4) growth harmone and the starold testostarona (dencted by G. Tha accompanying tabla lsts data on change In body fat mass aver tha 26-waak parlnd tallewing the treatmant. Carry aut an Ftest to sea whathar trua maan change in body tat mass dittars far the four treatmants It74 grand total -15.3, and TIN-2.130. (Round all yaur Intarmadlate calulations to therae declma change in Body Fat Mass (kg) Ireatment P P 4 06 5.2 4.0 2.2 33 2.2 14 2.2 3.0 4.0 0.0 5.9 .1 .2 0.5 2.04.35.1 0.6 .7 5.2 F-534 x (Give Uhe answer to one deial plate.)

Explanation / Answer

For the given data we get below output by using Anova single factor in excel :

Therefore answer is F = 53.8

Anova: Single Factor SUMMARY Groups Count Sum Average Variance Column 1 17 1.7 0.1 1.34625 Column 2 21 -19.5 -0.92857 2.081143 Column 3 17 -53 -3.11765 1.366544 Column 4 19 -87.5 -4.60526 1.247193 ANOVA Source of Variation SS df MS F P-value F crit Between Groups 247.8393 3 82.6131 53.80607 3.78E-18 2.735541 Within Groups 107.477 70 1.535386 Total 355.3164 73

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