Question

In a study of relationship between the heights and shoe sizes with 20 male participants, the researchers consider the height as the explanatory variable. The correlation coefficient of these two variables is 0.8. The mean and sample standard deviation of heights are 175cm and 15cm, respectively. The mean and sample standard deviation of foot lengths are 28.2cm and 3cm, respectively . What is the equation of the least-squares regression line? y = 0.2 + 0.16x y = 2.8 + 1.32x y = 4.75 + 3.75x y = 62.2 + 4x

          In a study of relationship between the heights and shoe sizes with 20 male participants, the researchers consider the height as the explanatory variable. The correlation coefficient of these two variables is 0.8. The mean and sample standard deviation of heights are 175cm and 15cm, respectively. The mean and sample standard deviation of foot lengths are 28.2cm and 3cm, respectively . What is the equation of the least-squares regression line?
y = 0.2 + 0.16x
y = 2.8 + 1.32x
y = 4.75 + 3.75x
y = 62.2 + 4x

In a study of relationship between the heights and shoe sizes with 20 male participants, the researchers consider the height as the explanatory variable. The correlation coefficient of these two variables is 0.8. The mean and sample standard deviation of heights are 175cm and 15cm, respectively. The mean and sample standard deviation of foot lengths are 28.2cm and 3cm, respectively . What is the equation of the least-squares regression line?
y = 0.2 + 0.16x
y = 2.8 + 1.32x
y = 4.75 + 3.75x
y = 62.2 + 4x

Added by Scott M.

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