or 11.2%Homework Set 3: Answers for chapter 3 exercises 6, 8, 10, 12, 15, 16, 20, 22.
6. a. 10.73, found by 161/15
b. Sample of RN’s
8. $143.75, found by ($1000 +$750 + $4000)/40
10. Median = 33, Mode = 15
12. Median = 10.5 Mode = 8
15.
or 11.2%
16.
20.
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f
X
CF
25 up to 35 5 30 150
35 up to 45 10 40 400
45 up to 55 21 50 1050
55 up to 65 16 60 960
65 up to 75 8 70 560
Total 60 3120
22. Age f CF
up to 20 15 15
20 up to 25 33 48
25 up to 30 19 67
30 up to 35 17 84
35 up to 40 11 95
40 up to 45 4 99
45 up to 50 1 100
Mode = 22.5 years