How profitable are different sectors of the stock market One way to answer such a question is to examine profit as a percentage

Question

How profitable are different sectors of the stock market One way to answer such a question is to examine profit as a percentage of stockholder equity A random sample of 30 retail stocks was studied for x profit as a percentage of stockholder equity The result was x 13 8 A random sample of 36 utility gas and electric stocks was studied for x profit as a percentage of stockholder equity The result was x 10 6 Assume that 4 4 and 3 1 a Categorize the problem below according to parameter being estimated proportion p mean difference of means H or difference of proportions P P2 Op OH OH H OP P b Let u represent the population mean profit as a percentage of stockholder equity for retail stocks and let 4 represent the population mean profit as a percentage of stockholder equity for utility stocks Find a 95 confidence interval for M M in Enter your answer in the form lower limit to upper limit Include the word to Round your numerical values to one decimal place

Kunduz · Accepted Answer

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