Recall the regression of percent of body fat on height and waist from Exercise 12-1. The simple regression model of percent of body fat on height alone shows the following:
(a) Test whether the coefficient of height is statistically significant.
(b) Looking at the model with both waist and height in the model, test whether the coefficient of height is significant in this model.
(c) Explain the discrepancy in your two answers.
US History Since 1877 T est 2 02/16/2016 ▯ Cyrus McCormick “the Farmer’s Movement” o farmers had moved from sustenance agriculture to commercial farming driven by the demand of the citied helped by the railroads machines were replacing workers o became most productive agriculture industry in history ▯ 1890s- farmers were becoming unhappy because prices were dropping ▯ ▯ Olive H. Kelly “The Grange” o farmers banding together o Purposes: 1. Social and cultural 2. Knowledge