Mathematics 9709/63 — May/June 2019
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 · Permutations and Combinations · Discrete Random Variables · Probability · Representation of Data
Q1The Normal DistributionFree sample
The time taken, in minutes, by a ferry to cross a lake has a normal distribution with mean 85 and standard deviation 6.8.
(i)3M
Find the probability that, on a randomly chosen occasion, the time taken by the ferry to cross the lake is between 79 and 91 minutes.
(ii)3M
Over a long period it is found that 96% of ferry crossings take longer than a certain time minutes. Find the value of .
The rest of this paper
6 more questions- Q2Probability6M
- Q3Permutations and Combinations5M
- Q4Permutations and Combinations6M
- Q5Discrete Random Variables · The Normal Distribution8M
- Q6Discrete Random Variables9M
- Q7Representation of Data10M
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