Exam (elaborations)
Pearson Edexcel Level 3 GCE Statistics Advanced PAPER 2: Statistical Inference QP JUNE 2024
- Course
- Institution
Pearson Edexcel Level 3 GCE Statistics Advanced PAPER 2: Statistical Inference QP JUNE 2024
[Show more]
Content preview
surname namesNumber Number
Paper
Statistics
■ ■
Advanced
PAPER 2: Statistical Inference
Calculator
Pearson Edexcel Level 3 GCE Statistics Advanced PAPER 2: Statistical Inference QP JUNE 2024
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-point pen.
• Fill
If pencil is used for diagrams/sketches/graphs it must be dark (HB or B).
in the boxes at the top of this page with your name,
• Answer
centre number and candidate number.
all questions and ensure that your answers to parts of questions are
• Answer
clearly labelled.
the questions in the spaces provided
• You
– there may be more space than you need.
should show sufficient working to make your methods clear.
• Unless
Answers without working may not gain full credit.
otherwise stated, inexact answers should be given to three
• Unless
significant figures.
otherwise stated, statistical tests should be carried out at the
5% significance level.
Information
•• AThere
booklet ‘Statistical formulae and tables’ is provided.
• The are 7 questions in this question paper. The total mark for this paper is 80.
marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
•• Read
Advice
each question carefully before you start to answer it.
• Check
Try to answer every question.
your answers
If you change if youabout
your mind have an
time at thecross
answer, end. it out and put your new answer and
any working underneath.
Turn over
P75705RA
©2024 Pearson Education Ltd.
F:1/1/1/1/1/1/1/1/1/1/
, Answer ALL questions. Write your answers in the spaces provided.
1 Brenda is a yoga teacher. She is researching the benefits of regular yoga practice on
DO NOT WRITE IN THIS AREA
reducing eye fatigue.
To carry out her research, Brenda seeks 12 volunteer students, who have never practised
yoga before, to join her yoga classes.
She asks each student to complete a questionnaire before they start her classes.
In her questionnaire, the first question is as follows.
Indicate below your current level of eye fatigue by placing a cross on the line.
A score of 0 indicates no eye fatigue and a score of 10 indicates severe eye fatigue.
0 1 2 3 4 5 6 7 8 9 10
After attending her classes for three months, these 12 students are asked again to
DO NOT WRITE IN THIS AREA
complete the same questionnaire.
Both scores for the first question, for each of these 12 students, are given in Figure 1
Student A B C D E F G H I J K L
Score before yoga 7.4 6.2 8.8 3.5 5.4 6.3 9.5 4.4 6.3 7.8 3.6 5.0
Score after yoga 4.3 5.0 4.7 3.5 6.7 4.5 5.0 6.2 3.5 2.4 4.8 4.5
Figure 1
Brenda believes that regular yoga practice can reduce the average eye fatigue score.
(a) Making any necessary assumptions, carry out a paired t-test to investigate whether
there is evidence to support Brenda’s belief.
(7)
DO NOT WRITE IN THIS AREA
2
■■■■
, Question 1 continued
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
(b) Give two possible sources of bias in this experiment.
(2)
DO NOT WRITE IN THIS AREA
(Total for Question 1 is 9 marks)
3
■■■■ Turn over
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller papersbybree. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75323 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now