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9709/52

Mathematics 9709/52 — May/June 2020

Cambridge A-Level · Probability & Statistics 1 · worked solutions for every part, with the mark scheme

7
questions
50
marks
75
minutes

Topics Representation of Data · Probability · The Normal Distribution · Discrete Random Variables · Permutations and Combinations

Q13MRepresentation of DataFree sample

For nn values of the variable xx, it is given that

∑(x−50)=144and∑x=944.\sum(x - 50) = 144 \quad \text{and} \quad \sum x = 944.

Find the value of nn.

The rest of this paper

6 more questions
  • Q2Probability5M
  • Q3Representation of Data8M
  • Q4The Normal Distribution8M
  • Q5Probability · Discrete Random Variables8M
  • Q6Permutations and Combinations9M
  • Q7Discrete Random Variables · The Normal Distribution9M
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