In order to construct a confidence interval for the populationvariance, a random sample of n observations is drawn froma normal population. Use this information to findχ2α/2,df andχ21- α/2,df underthe following scenarios. (Round your answers to 3 decimalplaces. 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. | | |
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rev: 06_10_2019_QC_CS-170121
