Mathematics 9709/62 — February/March 2020
Cambridge A-Level · Probability & Statistics 2 · worked solutions for every part, with the mark scheme
7
questions
50
marks
75
minutes
Topics The Poisson Distribution · Sampling and Estimation · Hypothesis Tests · Continuous Random Variables · Linear Combinations of Random Variables
Q13MThe Poisson DistributionFree sample
The booklets produced by a certain publisher contain, on average, 1 incorrect letter per 30 000 letters, and these errors occur randomly. A randomly chosen booklet from this publisher contains 12 500 letters.
Use a suitable approximating distribution to find the probability that this booklet contains at least 2 errors.
The rest of this paper
6 more questions- Q2Sampling and Estimation5M
- Q3Sampling and Estimation · Hypothesis Tests8M
- Q4The Poisson Distribution7M
- Q5Continuous Random Variables9M
- Q6Linear Combinations of Random Variables10M
- Q7Hypothesis Tests8M
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