The cost per item at a supermarket follows an exponential distribution. There are many inexpensive items and a few relatively expensive ones. The mean cost per item is $3.59. What is the percentage of items that cost: [5] i. Less than $1.5? ii. More than $2.5? iii. Between $2 and $4? iv. Find the 35th percentile. Sixty five percent of the supermarket items cost more than what amount? v