Question

The data in the table is the number of absences for 77 students and their corresponding grade.

Number of Absences	0	2	3	5	5	6	7
Grade	3.8	3.7	3.5	2.4	1.7	1.7	1.5

Step 1 of 5:

Calculate the sum of squared errors (SSE). Use the values b0=4.1811 and b1=−0.3917 for the calculations. Round your answer to three decimal places.

Step 2 of 5:

Calculate the estimated variance of errors, s2e . Round your answer to three decimal places.

Step 3 of 5:

Calculate the estimated variance of slope, s2b1 . Round your answer to three decimal places

Step 4 of 5:

Construct the 80% confidence interval for the slope. Round your answers to three decimal places.

Step 5 of 5:

Construct the 95% confidence interval for the slope. Round your answers to three decimal places.

Answer 1

Step 1 of 5: Calculate the sum of squared errors (SSE) =0.806

Step 2 of 5: Calculate the estimated variance of errors, s2e =0.161

Step 3 of 5: Calculate the estimated variance of slope, s2b1=0.004

Step 4 of 5: Construct the 80% confidence interval for the slope =-0.490 , -0.293

Step 5 of 5: Construct the 95% confidence interval for the slope.=-0.564 , -0.220