Mathematics International Advanced Subsidiary/Advanced Level Statistics S1

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Candidate surname Other names


Centre Number Candidate Number




Pearson Edexcel International Advanced Level
Time 1 hour 30 minutes
Paper
reference WST01/01
Mathematics
 



International Advanced Subsidiary/Advanced Level
Statistics S1

You must have: Total Marks
Mathematical Formulae and Statistical Tables (Yellow), calculator


Candidates may use any calculator permitted by Pearson regulations.
Calculators must not have the facility for symbolic algebra manipulation,
differentiation and integration, or have retrievable mathematical formulae
stored in them.
Instructions
•• Use black ink or ball-point pen.

•
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 your name, centre number and

•
candidate number.
Answer all questions and ensure that your answers to parts of questions are clearly

•
labelled.
Answer the questions in the spaces provided

•
– there may be more space than you need.
You should show sufficient working to make your methods clear. Answers without working

•
may not gain full credit.
Values from the statistical tables should be quoted in full. If a calculator is used instead of

•
the tables, the value should be given to an equivalent degree of accuracy.
Inexact answers should be given to three significant figures unless otherwise stated.
Information
•• A booklet ‘Mathematical Formulae and Statistical Tables’ is provided.

•
There are 6 questions in this question paper. The total mark for this paper is 75.
The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
Advice
•• Read each question carefully before you start to answer it.

••
Try to answer every question.
Check your answers if you have time at the end.
If you change your mind about an answer, cross it out and put your new answer
and any working underneath. Turn over



*P71284A0124*
P71284A
©2021 Pearson Education Ltd.

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1. The Venn diagram shows the events A, B and C and their associated probabilities, where
p and q are probabilities.

E

A B
C
0.04 0.06 p q 0.3




0.4


(a) Find P(B)
(1)

(b) Determine whether or not A and B are independent.
(2)

Given that P(C | B ) = P(C )

(c) find the value of p and the value of q
(3)

The event D is such that

• A and D are mutually exclusive
• P(B ∩ D) > 0

(d) On the Venn diagram show a possible position for the event D
(1)
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Question 1 continued
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(Total 7 marks)

3
 *P71284A0324* Turn over