Question

The following table compares the completion percentage and interception percentage of 55 NFL quarterbacks.

Completion Percentage	55	58	58	60	64
Interception Percentage	4.7	4.3	3.8	3.7	2.8

Step 4 of 5 :  

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

Lower endpoint: ____________

Upper endpoint: ____________

.

Previous Answers:

b1 = -0.2091

b0 = 16.1969

SSE = 0.128

s^2e = 0.043

s^2b1 = 0.001

Answer 1

The statistical software output for this problem is :

Lower endpoint = -0.282

Upper endpoint = -0.136