Question

Seven of ten students polled say that they prefer to practice for a team sport after school than before school. Based on this sample, how many students would you expect out of a population of 120 to prefer to practice after school?

70

36

84

77

Answer 1

7/10 is 70%
70% of 120 is 84.

So 84 people would prefer to practice after school.

Answer 2

Number of students who to prefer to practice after school are:

84

Explanation:

Seven of ten students polled say that they prefer to practice for a team sport after school than before school.

this implies that 7/10 part of the population prefer to practice for a team sport after school than before school.

Population of school=120

Hence, number of students who to prefer to practice after school are

7×120/10

= 84

Hence, 84 students prefer to practice after school