THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The residents of Austin,Texas,complain that parking fines given in their city are higher than the parking fines that are given in Houston.Independent random samples of the amounts paid by residents for parking tickets in each of two cities over the last four months were obtained.Assume the population variances are equal.These amounts were as follows:

-Find the 98% confidence interval for the difference in the mean costs of parking tickets in these two cities.
A)19.52 ± 25.37
B)19.52 ± 20.38
C)19.52 ± 22.77
D)19.52 ± 22.21

Question

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The residents of Austin,Texas,complain that parking fines given in their city are higher than the parking fines that are given in Houston.Independent random samples of the amounts paid by residents for parking tickets in each of two cities over the last four months were obtained.Assume the population variances are equal.These amounts were as follows:
 
-Find the 98% confidence interval for the difference in the mean costs of parking tickets in these two cities.
A)19.52 ± 25.37 
B)19.52 ± 20.38 
C)19.52 ± 22.77 
D)19.52 ± 22.21

Quizplus · Accepted Answer

The Answer of THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The residents of Austin,Texas,complain that parking fines given in their city are higher than the parking fines that are given in Houston.Independent random samples of the amounts paid by residents for parking tickets in each of two cities over the last four months were obtained.Assume the population variances are equal.These amounts were as follows:
 
-Find the 98% confidence interval for the difference in the mean costs of parking tickets in these two cities.
A)19.52 ± 25.37 
B)19.52 ± 20.38 
C)19.52 ± 22.77 
D)19.52 ± 22.21