A 99% confidence interval estimate for a population mean is determined to be 85.58 to 96.62. If the confidence level is reduced to 90%, the confidence interval for :
A) becomes wider
B) remains the same
C) becomes narrower
D) becomes wider on the left but remains the same on the right
E) does none of these

Question

A 99% confidence interval estimate for a population mean  is determined to be 85.58 to 96.62. If the confidence level is reduced to 90%, the confidence interval for  :
A) becomes wider 
B) remains the same 
C) becomes narrower 
D) becomes wider on the left but remains the same on the right 
E) does none of these

Quizplus · Accepted Answer

The Answer of A 99% confidence interval estimate for a population mean  is determined to be 85.58 to 96.62. If the confidence level is reduced to 90%, the confidence interval for  :
A) becomes wider 
B) remains the same 
C) becomes narrower 
D) becomes wider on the left but remains the same on the right 
E) does none of these

A 99% Confidence Interval Estimate for a Population Mean