Question

The table below gives the number of hours five randomly selected students spent studying and their corresponding grades. Using this data, consider the equation of the regression line, yˆ=b0+b1x, for predicting the grades that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression line to make a prediction if the correlation coefficient is not statistically significant. Hours Studying 0 2 4 5 6 Grades 76 86 87 91 99

A: Find the error prediction when x=4. Round y our answer to three decimal places.

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

Answer 1