Kudzu is a plant that was imported to the United States from Japan and now cover

Question

Kudzu is a plant that was imported to the United States from Japan and now covers over seven million acres in the South. The plant contains chemicals called isoflavones that nave been shown to have beneficial effects on bones. One study used three groups of rats to compare a control group with rats that were fed either a low dose or a high dose of isoflavones from kudzu. One of the outcomes examined was the bone mineral density in the femur (in grams per square centimeter). Here are the data. (a) Use numerical methods to describe the data. (b) Examine the assumptions necessary for ANOVA. Summarize your findings. (c) Run the ANOVA and report the results. State the F statistic and the degrees of freedom.

Explanation / Answer

F = 7.724426 , the result is significant

Anova: Single Factor SUMMARY Groups n Sum Xbar Variance s Control 15 3.284 0.218933 0.000136 0.011646 Low Dose 15 3.242 0.216133 0.000131 0.011445 High Dose 15 3.531 0.2354 0.000365 0.019097 ANOVA Source of Variation SS df MS F P-value F crit Between Groups 0.003250978 2 0.001625 7.724426 0.001391 3.219942 Within Groups 0.008838267 42 0.00021 Total 0.012089244 44

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