Question

The table below glives the number of hours spent unsupervised each day as wellas the overal grade averages for seven randomly selected middie school students. Using this data, consider the equation of the regression line.y bo +bix for predicting the overali arade average for a middle school student based on the number of hours spent unsupervised each day. Keep in mind, the correlation coefficient may or may not bes appropriate to use the regression line to make a prediction if the corelation coeffcient is not statisticaly signifcant Remember,in practice, t would not be Hours Unsupervised | 25. | 3-1 3:5 t 4 145 1 55 6 Overall Grades 9997 878378 6963 Table

Step 1 of 6: Find the estimated Slope. Round your answer to three decimal places.

Step 2 of 6: Find the estimated y-intercept. Round your answer to three decimals places.

Step 3 of 6: According to the estimated linear model, if the value of the independent variable is increased by one unit, then the change in the dependent variable y^ is given by?

Step 4 of 6: Determine if the statement "Not all points predicted by the linear model fall on the same line" is True or False.

Step 5 of 6: Find the estimated value of y when x = 2.5. Round your answer to three decimal places.

Step 6 of 6: Find the value of the coefficient of determination. Round your answer to three decimal places.

Answer 1