Using the following information from Exercise 16.25, complete the following:
Age is related to bone density, with a Pearson coefficient of 0.19.
Age of people studied: 55 years on average, with a standard deviation of 12 years
Bone density of people studied: 1000 mg/cm2 on average, with a standard deviation of 95 mg/cm2
a. Calculate the y intercept, a.
b. Calculate the slope, b.
c. Write the equation for the line.
d. Draw the line on an empty scatterplot, basing your line on predicted Y values for X values of 0, 1, and 48 years of age.