Question

The following data give the number of hours 55 students spent studying and their corresponding grades

Hours Studying	33	33	44	55	55
Grades	72	74	74	75	79

Step 1 of 5: Calculate the sum of squared errors (SSE). Use the values b0=66.8000 and b1=2.0000 for the calculations. Round your answer to three decimal places.

Step 2 of 5: Calculate the estimated variance of errors, s^2e. Round your answer to three decimal places.

Step 3 of 5: Calculate the estimated variance of slope, s^2b1. 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 98% confidence interval for the slope. Round your answers to three decimal places.

Answer 1

The statistical software output for this problem is :

Step 1 : SSE = 10.8

Step 2 : S²e = 3.6

Step 3 : S²b = 0.9

Step 4 : The 80% confidence interval for the slope is :

(0.446 , 3.554)

Step 5 : The 98% confidence interval for the slope is :

(-2.308 , 6.308)