Mathematics 9709/62 — February/March 2019
Cambridge AS Level · Probability & Statistics 1 · worked solutions for every part, with the mark scheme
7
questions
50
marks
75
minutes
Topics Probability · Representation of Data · The Normal Distribution · Discrete Random Variables · Permutations and Combinations
Q1ProbabilityFree sample
On each day that Tamar goes to work, he wears either a blue suit with probability 0.6 or a grey suit with probability 0.4. If he wears a blue suit then the probability that he wears red socks is 0.2. If he wears a grey suit then the probability that he wears red socks is 0.32.
(i)2M
Find the probability that Tamar wears red socks on any particular day that he is at work.
(ii)3M
Given that Tamar is not wearing red socks at work, find the probability that he is wearing a grey suit.
The rest of this paper
6 more questions- Q2Representation of Data4M
- Q3The Normal Distribution6M
- Q4Discrete Random Variables6M
- Q5Representation of Data7M
- Q6Discrete Random Variables · Probability · The Normal Distribution11M
- Q7Permutations and Combinations11M
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