Question

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

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.

Homework Answers

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

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