Determine the critical values for these tests of a population standard deviation. (a) A right-tailed test with 15 degrees of freedom at the a = 0.01 level of significance
(b) A left-tailed test for a sample of size n=21 at the a = 0.05 level of significance
(c) A two-tailed test for a sample of size n=30 at the a=0.1 level of significance
Click the icon to view a table a critical values for the Chi-Square Distribution.
(a) The critical value for this right-tailed test is 30.578.
(Round to three decimal places as needed.)
(b) The critical value for this left-tailed test is I.
(Round to three decimal places as needed.)

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