Posted by **Anonymous** on Saturday, August 7, 2010 at 1:23pm.

Thomas economic forecasting, Inc. and Harmon econometrics have the same mean error in forecasting the stock market over the last ten years. However, the standard deviation for Thomas is 30 points and 60 points for harmon.At the .05 signifcance level can we conclude that there is more variation in the forecasts given by hramon econometrics?

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