Apps. and Interpretation for IBDP Maths Ebook 1 | Page 384

Your Practice Set – Applications and Interpretation for IBDP Mathematics
70.2 (a) (i) 1.5 cm
(ii) 20
(iii) 40%
(iv) 1
(b) $90
(c) 80
70.3 (a) 25 minutes
(b) 15 minutes
(c) 60
(d) 40
(e) 52.5
(f) Systematic sampling
70.4 (a) 35 minutes
(b) 10 minutes
(c) 30
(d) 25
(e) 55
(f)
1
16
Chapter 18
Exercise 71
71.4 (a) (i) a � 4 , b � 6
(ii)
6
7
(b)
1
330
Exercise 72
72.1 (a) (i) 4
(ii) 5
(b)
2
15
72.2 (a) (i) 2
(ii) 13
(b)
1
20
72.3 (a) (i) 0.4
(ii) 0.2
(b) 0.7
72.4 (a) (i) 0.3
(ii) 0.1
(b) 0.1
71.1 (a) (i)
(b)
(ii)
11
38
71.2 (a) (i)
(b)
(ii)
3
35
71.3 (a) (i)
(b)
(ii)
7
100
3
5
8
11
3
5
9
14
18
25
5
8
Exercise 73
73.1 (a) Refer to solution
(b)
15
28
73.2 (a) Refer to solution
(b)
5
6
73.3 (a)
5
8
(b)
13
40
(c)
3
13
73.4 (a)
3
5
(b)
2
3
(c)
3
5
374
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