(a) Determine the critical value for a right tailed test of a population mean at the 0 01 level of signicance with 15 degrees of freedom (b) Determine the critical value for a left tailed test of a population mean at the 0 05 level of signicance based on a sample size of n 20 (c) Determine the critical values for a two tailed test of a population mean at the 0 05 level of signicance based on a sample size of n 13

Question: (a) Determine the critical value for a right-tailed test of a population mean at the = 0.01 level of signicance with 15 degrees of

(a) Determine the critical value for a right-tailed test of a population mean at the α = 0.01 level of signiﬁcance with 15 degrees of freedom.
(b) Determine the critical value for a left-tailed test of a population mean at the α = 0.05 level of signiﬁcance based on a sample size of n = 20.
(c) Determine the critical values for a two-tailed test of a population mean at the α = 0.05 level of signiﬁcance based on a sample size of n = 13.

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