QUESTION 3 The difference between the maximum and the minimum of observations is a range b. variance C. sample d. standard deviation e. percentile QUESTION 4QUESTION 2 1 points Save Answe An Amtrak official obtains data on a particular day concerning the length of time (in minutes) that the metroliners leaving New York take to reach Philadelphia, with the following results: 90 88 92 91 89 90 Find the sample variance. 8. 2.4 b- 0.8 C. 3.2 d. 4 e. 2