Question

In: Statistics and Probability

The data in the table is the number of absences for 7 students and their corresponding...

The data in the table is the number of absences for 7 students and their corresponding grade.

Number of Absences 3 3 3 4 4 4 6
Grade 3.9 3.7 3.7 2.7 2.5 1.8 1.8

Calculate the estimated variance of slope, s^2b1. Round your answer to three decimal places.

Construct the 90% confidence interval for the slope. Round your answers to three decimal places.

Construct the 90% confidence interval for the slope. Round your answers to three decimal places.

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

Construct the 99% confidence interval for the slope. Round your answers to three decimal places.

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

Construct the 85% confidence interval for the slope. Round your answers to three decimal places.

Solutions

Expert Solution

estimated variance of slope, s^2b1 =0.044

90% confidence interval for the slope= -1.125 , -0.284

95% confidence interval for the slope = -1.241 , -0.168

99% confidence interval for the slope = -1.546 , 0.138

80% confidence interval for the slope = -1.012 , -0.396

85% confidence interval for the slope = -1.059 , -0.349


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