Mathematics 9709/73 — May/June 2015
Cambridge A-Level · Probability & Statistics 2 · worked solutions for every part, with the mark scheme
Topics Sampling and Estimation · Hypothesis Tests · Linear Combinations of Random Variables · The Poisson Distribution · Continuous Random Variables
Jyothi wishes to choose a representative sample of 5 students from the 82 members of her school year.
She considers going into the canteen and choosing a table with five students from her year sitting at it, and using these five people as her sample. Give two reasons why this method is unsatisfactory.
Jyothi decides to use another method. She numbers all the students in her year from 1 to 82. Then she uses her calculator and generates the following random numbers.
From these numbers, she obtains the student numbers 23, 14, 76, 5, 34 and 62. Explain how Jyothi obtained these student numbers from the list of random numbers.
The rest of this paper
6 more questions- Q2Hypothesis Tests5M
- Q3Sampling and Estimation6M
- Q4Sampling and Estimation · Linear Combinations of Random Variables6M
- Q5Sampling and Estimation · Hypothesis Tests7M
- Q6The Poisson Distribution · Linear Combinations of Random Variables10M
- Q7Continuous Random Variables11M