Complete parts a through c below a Determine the critical value s for a right tailed test of a population mean at the x 0 01 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 0 01 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 x 0 05 level of significance based on a sample size of n 18 Click here to view the t Distribution Area in Right Tail a tcrit b tcrit e t Round to three decimal places as needed Round to three decimal places as needed Bound to three decimal places as needed