Question

b) A survey on the nationality of the student in the St Thomas international school is conducted and the results are shown below:i) if two students are randomly selected, what is the probability that both of them are European (correct to 4 decimal places)ii) if one student is randomly selected, what is the probability that a student is not Asian. (correct to 4 decimal places)

Answer 1

Given:-

A survey on the nationality of the student in the St Thomas international school is conducted and the results are shown.

To find if two students are randomly selected, what is the probability that both of them are European and if one student is randomly selected, what is the probability that a student is not Asian.

So now the total number of students are,

`230+110+85+25=450`

So now the probability of getting European is,

`(110)/(450)=(11)/(45)`

So the probability is,

`(11)/(45)`

So now the probability is asian is,

`(230)/(450)=(23)/(45)`

So the probability that it is not asian is,

`1-(23)/(45)=(45-23)/(45)=(22)/(45)`

so the required probability is,