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A-Level MathematicsYear 2020Q3

13 Turn over Question 3 continued Chidi’s friend, Jason, discovers that Chidi’s sample is, in fact, the daily percentage change of the BASF share price for all of the 251 days in 2018 on which shares were bought and sold. Jason makes two criticisms of Chidi’s decision to perform his hypothesis test on this data: A Chidi did not need to do a hypothesis test to find out whether the average daily percentage change of the BASF share price was negative in 2018. B Chidi cannot use the outcome of his hypothesis test to reliably make a judgement about the average daily percentage change of the BASF share price in the future. (b) Explain why each of Jason’s criticisms is correct. (2) ___________________________________________ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ___________________________________________

Paper Source:9ST0_03_que_20201024.pdf

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Exam Specification Info

This question is part of the UK A-Level Mathematics syllabus. In the actual exam, structured questions typically require linking specific keywords to gain full marks. Applaa helps you drill these topics.

Syllabus levelAdvanced Level (A-Level)

SubjectMathematics

Official MarksVariable (2–6 marks)

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