Question

The table and scatterplot show the number of hours worked, x,and the number of money spent on entertainment, why, by each of 11 students. The equation of the line best fit is y= 0.4x+22.05.Use equation of a line of best fit to fill the blanks in belowGive exact answers, not rounded approximations

Answer 1

Explanation

Part A

When the number of hours = 9.9, the observed amount is given as 21.50. The predicted amount can be gotten using the equation of the line of best fit.

$y=0.4(9.9)+22.05=26.01$

Therefore, the residual amount becomes

$residual=26.01-21.50=4.51$

Part B

When the number of hours = 12.1, the observed amount is given as 25.00. The predicted amount can be gotten using the equation of the line of best fit.

$y=0.4(12.1)+22.05=26.89$

Therefore, the residual amount becomes

$residual=26.89-25.00=1.89$

Answer: