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9709/61

Mathematics 9709/61 — May/June 2015

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

7
questions
50
marks
75
minutes

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

Q14MThe Normal DistributionFree sample

The lengths, in metres, of cars in a city are normally distributed with mean μ\mu and standard deviation 0.714. The probability that a randomly chosen car has a length more than 3.2 metres and less than μ\mu metres is 0.475. Find μ\mu.

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6 more questions
  • Q2Representation of Data5M
  • Q3Probability6M
  • Q4Probability7M
  • Q5Representation of Data7M
  • Q6Discrete Random Variables · The Normal Distribution10M
  • Q7Permutations and Combinations11M
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