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Determine the upper-tail critical value to / 2 in each of the following circumstances. a. 1 - a = 0.90, n = 38 d. 1 - a =0.90, n =61 b. 1 - a = 0.95, n = 38 e. 1 - a = 0.99, n = 19 c. 1 - a = 0.90, n = 44 a. t= (Round to four decimal places as needed.) b. t = (Round to four decimal places as needed.) c. t= (Round to four decimal places as needed.) d. t= (Round to four decimal places as needed.) e. 1= (Round to four decimal places as needed.) Enter your answer in the edit fields and then click Check Answer. All parts showing Clear A