Mathematics 9709/71 — May/June 2017
Cambridge A-Level · Probability & Statistics 2 · worked solutions for every part, with the mark scheme
6
questions
50
marks
75
minutes
Topics The Poisson Distribution · Hypothesis Tests · Linear Combinations of Random Variables · Sampling and Estimation · Continuous Random Variables
Q1The Poisson DistributionFree sample
On average, 1 clover plant in 10 000 has four leaves instead of three.
(i)3M
Use an approximating distribution to calculate the probability that, in a random sample of 2000 clover plants, more than 2 will have four leaves.
(ii)2M
Justify your approximating distribution.
The rest of this paper
5 more questions- Q2Hypothesis Tests6M
- Q3Sampling and Estimation6M
- Q4Continuous Random Variables9M
- Q5Linear Combinations of Random Variables10M
- Q6Hypothesis Tests · The Poisson Distribution · Linear Combinations of Random Variables14M
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