Question

In: Statistics and Probability

In order to construct a confidence interval for the population variance, a random sample of n...

In order to construct a confidence interval for the population variance, a random sample of n observations is drawn from a normal population. Use this information to find χ2α/2,df and χ21- α/2,df under the following scenarios. (Round your answers to 3 decimal places. You may find it useful to reference the appropriate table: chi-square table or F table)

χ2α/2,df χ21- α/2,df
a. A 95% confidence level with n = 18.
b. A 95% confidence level with n = 30.
c. A 99% confidence level with n = 18.
d. A 99% confidence level with n = 30.

rev: 06_10_2019_QC_CS-170121

Solutions

Expert Solution

Solution-

A 95% confidence level with n = 18.

A 95% confidence level with n = 30

A 99% confidence level with n = 18.

A 99% confidence level with n = 30


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