Suppose we use a person\'s dad\'s height to predict how short or tall the person

Question

Suppose we use a person's dad's height to predict how short or tall the person will be by building a regression model to investigate if a relationship exists between the two variables. Suppose the regression results are as follows: Least Squares Linear Regression of Height Interpret the standard deviation in this problem. We expect most of the sampled heights to fall within 9.8 inches of their least squares predicted values. We expect most of the sampled heights to fall within 4.9 inches of their least squares predicted values. We expect most of the sampled dad's heights to fall within 9.8 inches of their least squares predicted values. We expect most of the sampled dad's heights to fall within 4.9 inches of their least squares predicted values.

Explanation / Answer

height = a + b* dadsHt

sd(height) = 4.9

most of value are within 2 sd = 2*4.9 = 9.8

hence

option A) is correct

we expect most of the sampled heights to fall within 9.8 inches of there least square predicted vlaues

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