A-Level MathematicsYear 2020Q7
16 7 Daniel, a car fleet manager, has collected data about the durability of four brands of car tyre. He recorded the distance, X thousand miles, travelled by each worn out tyre replaced during April 2019. He calls this distance ‘tyre life’. Daniel has calculated summary statistics for tyre life, as given in Figure 6. Brand A Brand B Brand C Brand D ∑ x 190.078 184.401 133.191 146.858 ∑ x2 5236.989 4414.446 3068.984 2787.855 n 7 8 6 8 Figure 6 (a) Use ANOVA to investigate whether there is a difference between the mean tyre lives of the four brands, A, B, C and D. You should make any necessary assumptions. (11) _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________
Paper Source:9ST0_02_que_20201023.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)