According to a recent study in 2014 by the RAND corporation, in the U.S. 9.3 million more people have gained health care coverage over the previous year with an error of 3.5 million people based on the statistical study. 1. This type of error in a study is often referred to as a margin of error. a. What is the least number of people that have gained coverage based on the study? b. What is the most number of people that have gained coverage based on the study