Question
Use technology to construct the confidence intervals for the population variance sigmaσsquared2 and the population standard...
Use technology to construct the confidence intervals for the population variance sigmaσsquared2 and the population standard deviation sigmaσ. Assume the sample is taken from a normally distributed population. cequals=0.990.99 , ssquared2equals=12.2512.25 , nequals=2929
The confidence interval for the population variance is
(nothing ,nothing ).
(Round to two decimal places as needed.)
Homework Answers
Answer #1
The 99% confidence interval for the population variance is ,
Where , From excel , 
, "=CHIINV(0.005,28)"
, "=CHIINV(0.995,28)"
The 99% confidence interval for the population standard deviation is ,
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