Question 5, Section 14.2 Exercise 7 Part 2 of 2 HW Score: 79.46%, 79.46 of 100 points Points: 0 of 4 Using the t tables, software, or a calculator, estimate the values asked for in parts (a) and (b) below. a) Find the critical value of t for a 90% confidence interval with df = 14. t= 1.76 (Round to two decimal places as needed.) b) Find the critical value of t for a 98% confidence interval with df = 81. t=.03 (Round to two decimal places as needed.)