A coffee shop would like to compare the dollar purchases of customers who use the drive-thru and those who come inside. A random sample of inside and drivethru purchases is taken, and the results are contained in the file Coffee Shop Sales.
a. Develop a box and whisker plot to compare the dollar purchases of inside and drive-thru customers.

b. Are the purchases symmetric or skewed for each group?
c. Are the median purchase amounts for the two groups similar or not?
d. Does one customer group have more variation in its purchases?
e. Do any of the sampled values appear to be unusual?
f. Report the five-number summary for each of the two customer groups