Calculate the equation of the line of best fit. Draw the line of best fit on the scatter diagram. Calculate the standard deviation of the y values about the line of best fit. Does the value of b 1...

Calculate the equation of the line of best fit.

Draw the line of best fit on the scatter diagram.

Calculate the standard deviation of theyvalues about the line of best fit.

Does the value ofb1 show strength significant enough for you to conclude that the slope is greater than zero at the 0.05 level?

Determine the 0.95 confidence interval for the mean yield when 85 lb of fertilizer are used per plot.

Draw a line on the scatter diagram representing the 95% confidence interval found in question 13.20.