"What is the lower bound of the 95% confidencefiaterval 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 - 7.5%, Year 2.-7.4%, Year 3 - 17.5%, Year 4 - 10.7%, Year 5 - 10.6%, Year 6.4.2%