Question 6
Answer the given subquestions.
A manufacturer of biscuits wants to do a sample survey about the popularity of milk-based biscuits. It plans to do a quantitative survey. The company classifies its customers based on gender (male / female) and age (5 to 10 years / 11 to 15 years) and customizes its designs accordingly. The company wants to do the study in only one city. The company wants to have a robust sample size with no compromises. What should be the minimum sample size?