Statistics- Mean Rate of Return Standard Deviation Group

QUESTION

A financial advisor wondered whether the mean rate of return of healthcare, consumer goods, and technology stocks differed over the past five years. She obtained a simple random sample of 14 companies from each of the three sectors and obtained five-year rates of return. The means and standard deviations of the rates of return are given below.Mean Rate of ReturnStandard DeviationGroup 11.6013.656Health Care 8.5043.217Consumer Goods 15.0825.798TechnologyAn ANOVA F test was run on the data. Below is a portion of the results:SourcedfSums of squaresMean squareF-ratioGroup303.2Error19.1Total

ANSWER:

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