Ten used cars from a rental fleet are randomly selected.Each vehicle's annual maintenance cost from the previous calendar year (y) is recorded as well as the vehicle's current mileage (x).A simple linear regression is conducted on the data.

What is a 98% confidence interval for the mean annual repair cost of all used vehicles with 22,500 miles.= (Given: Sxx= 8,036,677,024 and = $43,627.700.)
A) $(120.00, 759.20)
B) $(-431.51, 1,310.72)
C) $(22,199.25, 22,800.75)
D) $(128.29, 750.91)

Question

Ten used cars from a rental fleet are randomly selected.Each vehicle's annual maintenance cost from the previous calendar year (y) is recorded as well as the vehicle's current mileage (x).A simple linear regression is conducted on the data. ​

​
What is a 98% confidence interval for the mean annual repair cost of all used vehicles with 22,500 miles.=> (Given: Sxx= 8,036,677,024 and  = $43,627.700.)
A) $(120.00, 759.20) 
B) $(-431.51, 1,310.72) 
C) $(22,199.25, 22,800.75) 
D) $(128.29, 750.91)

Quizplus · Accepted Answer

The Answer of Ten used cars from a rental fleet are randomly selected.Each vehicle's annual maintenance cost from the previous calendar year (y) is recorded as well as the vehicle's current mileage (x).A simple linear regression is conducted on the data. ​

​
What is a 98% confidence interval for the mean annual repair cost of all used vehicles with 22,500 miles.=> (Given: Sxx= 8,036,677,024 and  = $43,627.700.)
A) $(120.00, 759.20) 
B) $(-431.51, 1,310.72) 
C) $(22,199.25, 22,800.75) 
D) $(128.29, 750.91)

Ten Used Cars from a Rental Fleet Are Randomly Selected