Question

4. In the diagram, not drawn to scale, B is the midpoint of OX. C is the midpoint of AB and D is such that OD = 2DA. The vectors a and b are such that
A

D *

Answer 1

. A class of 24 students threw the cricket ball at sports. The distance thrown by each student was measured to the nearest meter. The results are shown below.
22 50 35 52 47 30 48 34 45 23 43 40
55 29 46 56 43 59 36 63 54 32 49 60
(a) Copy and complete the frequency table for the data shown above.
Distance (m) Frequency
20-29 3
30-39 5
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(b) State the lower boundary for the class interval 20 – 29
(c) Using a scale of 1 cm on the x axis to represent 5 meters and a scale of 1 cm on the y axis to represent 1 student, draw a histogram to illustrate the data
(d) Determine (i) the number of students who threw the ball a distance recorded as 50 m or more
(ii) the probability that a student, chosen at random, threw ball recorded as 50 m or more

Answer 2

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