9709/61

Mathematics 9709/61October/November 2019

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

7
questions
50
marks
75
minutes

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

Q13MProbabilityFree sample

When Shona goes to college she either catches the bus with probability 0.8 or she cycles with probability 0.2. If she catches the bus, the probability that she is late is 0.4. If she cycles, the probability that she is late is xx. The probability that Shona is not late for college on a randomly chosen day is 0.63. Find the value of xx.

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6 more questions
  • Q2Discrete Random Variables6M
  • Q3Representation of Data7M
  • Q4Discrete Random Variables · Probability7M
  • Q5Representation of Data8M
  • Q6Permutations and Combinations9M
  • Q7The Normal Distribution · Discrete Random Variables10M
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