A recent study by a major financial investment company was interested in determining whether the annual percentage change in stock price for companies is linearly related to the annual percent change in profits for the company. The following data was determined for 7 randomly selected companies: % Change Stock Price % Change in Profit 8.4 4.2 9.5 5.6 13.6 11.2 -3.2 4.5 7 12.2 18.4 -2.1 12 -13.4 Based upon this sample information, which of the following is the regression equation? B) y = 20.19 + .005x A) y = 15.04 + 4.25x C) y = 4.19 + .61x D) y = 1.19 - 3.00x

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.