determine the critical values

Determine the critical values for these tests of a population standard deviation. (a) A right-talled test with 15 degrees of freedom at the a = 0.1 level of significance (b) A left-tailed test for a sample of size n = 24 at the a = 0.01 level of significance (c) A two-tailed test for a sample of size n = 23 at the a = 0.05 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 ( Round to three decimal places as needed.)