The best representation of the preferences of all the students at her school will be 80 students.
What is probability?
Probability is defined as the ratio of the number of favorable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.
The good maximum sample size is usually around 10% of the population, as long as this does not exceed 1000.
The sample size will be calculated as:-
= 10 % of 800
= 800 x 0.1 = 80 students
Therefore the best representation of the preferences of all the students at her school will be 80 students.
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