Complete parts (a) through (c) below. (a) Determine the critical value(s) for a right-tailed test of a population mean at the a = 0.05 level of significance with 10 degrees of freedom. (b) Determine the critical value(s) for a left-tailed test of a population mean at the a 0.10 level of significance based on a sample size of n= 20. (c) Determine the critical value(s) for a two-tailed test of a population mean at the a = 0.05 level of significance based on a sample size of n = 18. E Click here to view the t-Distribution Area in Right Tail. (a) terit = (Round to three decimal places as needed.)

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