# 2013 A-level H1 Mathematics (8864) Question 6 Suggested Solutions

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions.

(i)
Stratified random sampling.
Split the population of people into three mutually exclusive strata, Y, and X to be surveyed
Number of latex = \frac{10000}{30000} \times 150 = 50Z to be surveyed

Select the required number of people within each strata using simple random sampling.

(ii)
The sample she gets will be more representative of the population since she split them into mutually exclusive strata.