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9709/61

Mathematics 9709/61 — October/November 2013

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

7
questions
50
marks
75
minutes

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

Q13MThe Normal DistributionFree sample

It is given that X∼N(30,49)X \sim \text{N}(30, 49), Y∼N(30,16)Y \sim \text{N}(30, 16) and Z∼N(50,16)Z \sim \text{N}(50, 16). On a single diagram, with the horizontal axis going from 0 to 70, sketch three curves to represent the distributions of XX, YY and ZZ.

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6 more questions
  • Q2Probability5M
  • Q3Representation of Data5M
  • Q4Representation of Data7M
  • Q5The Normal Distribution · Discrete Random Variables9M
  • Q6Permutations and Combinations10M
  • Q7Probability · Discrete Random Variables11M
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