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Pearson Edexcel Level 3 GCE Advanced PAPER 2 Statistical inference June 2023
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Pearson Edexcel Level 3 GCE Advanced PAPER 2 Statistical inference June 2023
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Please check the examination details below before entering yourcandidate information
Candidate surnameOther names
Centre Candidate
Number Number
Pearson Edexcel Level
3 GCE
Monday 12th June
Morning (Time: 2
2023
hours)
referen 9ST0/0
ce
Statistic Paper 2
Advanced
sPAPER 2: Statistical
inference
You must have: Total
Statistical formulae and tables Marks
booklet Calculator
Candidates may use any calculator allowed by Pearson regulations.
Calculators must not have retrievable mathematical formulae stored in
them.
Instructions
• Use black ink or ball-
• If pencil is used for diagrams/sketches/graphs it must be dark (HB or B).
• Fill in the boxes at the top of this page with
centre number and candidate
point pen.
• Answer
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your name,
• Answer thelabelled.
are clearly questions in themay
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be more space than you need.
• You should show sufficient working to make your methods clear.
Answers
provided without working may not gain
• full credit.
Unless otherwise stated, inexact answers should be given to three
• Unless otherwise stated, statistical tests should be carried out at the 5% significance
Informat
level.
significant figures.
• A booklet ‘Statistical formulae and tables’ is
ion
• There are 7 questions in this question paper. The total mark for
• provided.
The marks is
this paper for80.
each question
– use are
this as a shown
guide as to how much time to
spend on each question.
in brackets
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• Read each question carefully before you start to answer it.
• Try to answer every
•
•
Check your answers if you have time
If you change your mind about an answer, cross it out and put your new answer and
question.
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working
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, Answer ALL questions. Write your answers in the spaces provided.
1 100 professional players qualified to take part in the World Cup for a video game.
AREA
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In each round, players were awarded points based on their position.
The overall positions in the tournament were determined by the total number of points
that the players scored from all the rounds. The winning player gained the highest
number of final points.
Keito believes that professional players from countries in Asia are better players than
those from other continents.
To test this belief, he obtained a sample of 20 players from those in the World Cup.
The final points of the players are shown in Figure 1.
Final points of Final points of
players from players from
countries in Asia countries not in Asia
32 20
26 17
23 15
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19 13
16 12
14 11
4 10
3 6
5
2
1
0
Figure 1
(a) Carry out a non-parametric test to determine whether there is evidence to support
Keito’s belief.
(9)
AREA
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, Question 1 continued
DO NOT WRITE IN THIS
AREA
DO NOT WRITE IN THIS
AREA
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(b) Suggest one improvement that could be made to the test in (a).
(1)
AREA
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