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A-Level MathematicsYear 2021Q1

2 Answer ALL questions. Write your answers in the spaces provided. 1 Josh works as a proofreader at a company. He is currently correcting the errors in spelling, punctuation, and grammar in the text of a new novel. He has to make a record of every change he makes to the text. The author’s last novel had 136 pages and needed a lot of corrections. The bar chart in Figure 1 shows the distribution of text errors per page in this last novel. 0 Frequency Errors per page 60 50 40 30 20 10 0 1 2 3 4 5 6 7 Figure 1 (a) Assuming that the new novel has a similar distribution of errors to the last novel, estimate, (i) the probability that a randomly chosen page has fewer than 2 errors, (2) _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ (ii) the expected number of errors per page. (3) _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________

Paper Source:9ST0_01_que_20211020.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)