"What is the upper bound of the 95% confidence interval for the following stock returns? (Blackboard will yell at you about the units (%), when tested it looks like adding the units or leaving the units off of this problem makes no difference in the grading. Do NOT answer in decimal form!) Year 1 - -1.8%, Year 2 - -3.3%, Year 3 - 13.6%, Year 4 - -9.4%, Year 5 - 19.6%, Year 6 - -9.7%