2- Annual revenue for Company A, grew by 6% in 2010, 2% in 2011, -5% in 2012, -3% in 2013, and 3.2% in 2014. What is the mean growth annual rate over this period? 3- Suppose the students grade in business statistics class is not normally distributed. The class average is 73 points with a standard deviation of 6.9 points. The instructor decided that the top 15% of the class will get A, and the lowest 15% of the class will get fail. a. What is the lowest grade point that a student needs to get A? b. What is the lowest grade point that a student needs to pass the course?