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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?
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