... Homework
Area of trapezium
Lady Margaret School
Meron Elias
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Q1 Q2 - Painting the cinema
The diagram shows the cross-section of a wall of a cinema,
It is to be painted.
14 m
6
6
02
1
1
111 m
1
1
1
10 m
7 m
4 m
9 m
Work out the area that needs to be painted.
m2
[3]
Total
Paint costs £7 for a tin which covers 15 m2
How much will it cost to paint?
(You can only buy whole tins of paint!)
6
£
[2]
13

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Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain

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