Analysis and Approaches for IBDP Maths Ebook 1 | Page 330

Your Practice Set – Analysis and Approaches for IBDP Mathematics
Exercise 96 Exercise 98
96.1 (a) (i) 0.00839
(ii) 0.0301
(b) 0.0000705
(c) (i) 0.839
(ii) 0.0524
96.2 (a) (i) 0.00621
(ii) 0.931
(b) 0.0123
(c) (i) 0.373
(ii) 0.994
96.3 (a) (i) 66.9
(ii) 0.319
(b) 0.255
(c) (i) 3.1875
(ii) 0.529
96.4 (a) (i) 9.51
(ii) 0.773
(b) 0.001
(c) (i) 4.68
(ii) 0.00149
Chapter 22
Exercise 97
97.1 (a) (i) a � 0.2 , b � 52.4
(ii) 69.4
(b) (i) 0.183
(ii) Weak, Positive
97.2 (a) (i) a �� 2.09 , b � 96.1
(ii) 77.3 C
(b) (i) � 0.607
(ii) Moderate, Negative
97.3 (a) (i) a � 0.712 , b � 7.22
(ii) 25.0
(b) � 0.989
(c) 0.54
97.4 (a) (i) � 0.957
(ii) a �� 0.746 , b � 6.75
(b) 0.178
(c) 1.431 hours
98.1 (a) (i) a � 0.157 , b �� 5.75
(ii) a represents the
average increase of
university entrance
mark when the public
exam score is
increased by 1.
(b) 22.4
98.2 (a) (i) a � 3.42 , b � 1.55
(ii) b represents the
expected sales in
2011.
(b) 10.1 million dollars
98.3 (a) (i) a � 5.98 , b � 21.6
(ii) a represents the
average increase of
number of visitors
when the maximum
temperature is
increased by 1 degree
Celsius.
b represents the
expected number of
visitors when the
maximum
temperature is
zero degree Celsius.
(b) 45.5
98.4 (a) (i) a � 6.85 , b � 24.3
(ii) a represents the
average increase of
the hardness of a
metal ingot when its
breaking strength is
increased by 1 tonne
per cm.
b represents the
hardness of a metal
ingot when its
breaking strength is
zero tonne per cm.
(b) 65.4
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