Analysis and Approaches for IBDP Maths Ebook 2 | Seite 296

Your Practice Set – Analysis and Approaches for IBDP Mathematics
Exercise 74
74.1 (a)
581
4300
(b)
275
581
74.2 (a) p � 0.23
(b)
667
3516
74.3 (a) p � 0.98
74.4
(b)
62
287
Exercise 75
197
497
75.1 (a)
68
145
(b)
15
34
75.2 (a) p � 0.15
(b)
1012
1597
75.3 (a) q � 8
75.4
(b)
17
31
Exercise 76
76.1 (a)
(b)
76.2 (a)
(b)
44
63
63
4862
5
374
5
3876
479
969
76.3 (a)
76.4
(b)
1
252
Chapter 18
Exercise 77
2
429
14
143
77.1 (a) r � 0.4 , s � 0.1
(b) (i) � 2.35
(ii) 4.9275
77.2 (a) r � 0.2 , t � 30
(b) q � 8
77.3 (a) r � 0.3
(b) E( X ) � 0.5
(c) a � 2
(d) 4.5
77.4 (a) r � 0.1
(b) E( X ) � 10
(c) a � 5
(d) E( Y) �� 2
Exercise 78
78.1 (a) E( X ) � 28.803
(b)
2
E( X ) � 920.376
(c) 9.53
78.2 (a) E( X ) � 10.55
(b) E( Y) �� 3.05
(c) 1.12
78.3 (a)
1
k �
2
(b)
13
E( X ) �
3
(c)
20
Var( X ) �
9
286
SE Production Limited