THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
Independent random sampling from two normally distributed populations gives the following results:
n x = 55,
= 520,σ x = 30,n y = 45,
= 482,and σ y = 24
-Find the 98% confidence interval for the difference in the means of the two populations.
A)1002 ± 12.58
B)38 ± 12.58
C)38 ± 19.86
D)1002 ± 19.86

Question

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
Independent random sampling from two normally distributed populations gives the following results:
n x = 55,  
= 520,σ x = 30,n y = 45,  
= 482,and σ y = 24
-Find the 98% confidence interval for the difference in the means of the two populations.
A)1002 ± 12.58 
B)38 ± 12.58 
C)38 ± 19.86 
D)1002 ± 19.86

Quizplus · Accepted Answer

The Answer of THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
Independent random sampling from two normally distributed populations gives the following results:
n x = 55,  
= 520,σ x = 30,n y = 45,  
= 482,and σ y = 24
-Find the 98% confidence interval for the difference in the means of the two populations.
A)1002 ± 12.58 
B)38 ± 12.58 
C)38 ± 19.86 
D)1002 ± 19.86