You randomly select and measure the contents of 10 bottles of cough syrup. The results are listed
4.212 4.298 4.259 4.243 4.181
4.209 4.269 4.244 4.223 4.237
Assume sample is taken from normally distributed population.
Construct 95% confidence intervalsfor:
(a) Confidence interval for population variance ____,_____
Round six decimals as needed
(b) Confidence interval for population standard deviation____,____
First, from the dataset, we could get the variance
Find the critical values χ2R and χ2L for a 95% confidence interval when the sample size is 10.
Because the sample size is 10, there are 9 …
The solution provides detailed explanation how to find out the 95% confidence interval for variance and standard deviation.