SOLUTION: why is a 99% confidence interval wider than 95% confidence interval?
Algebra
->
Statistics
->
Confidence-intervals
-> SOLUTION: why is a 99% confidence interval wider than 95% confidence interval?
Log On
Confidence Intervals. Construct interval, find sample size, interpret the confidence level
Confidence
Solvers
Solvers
Lessons
Lessons
Answers archive
Answers
Click here to see ALL problems on Confidence-intervals
Question 1055491
:
why is a 99% confidence interval wider than 95% confidence interval?
Answer by
ewatrrr(24785)
(
Show Source
):
You can
put this solution on YOUR website!
ME =
check out z-values...
2.576 > 1.645
Multiplying by a greater z-value makes interval wider
|
= CI z = value
90% z =1.645
92% z = 1.751
95% z = 1.96 ***
98% z = 2.326
99% z = 2.576 ****