The frequency distribution representing the number of frequent flier miles accumulated by employees at Brumley Statistical Consulting Company is repeated from Exercise 17.
|
Frequent Flier Miles (000)
|
Frequency
|
|
0 up to 3
|
5
|
|
3 up to 6
|
12
|
|
6 up to 9
|
23
|
|
9 up to 12
|
8
|
|
12 up to 15
|
2
|
|
Total
|
50
|
a. How many employees accumulated less than 3,000 miles?
b. Convert the frequency distribution to a cumulative frequency distribution.
c. Portray the cumulative distribution in the form of a cumulative frequency polygon.
d. Based on the cumulative frequency polygon, about 75 percent of the employees accumulated how many miles or less?