Question

A group of 150 middle school students were asked whether they prefer playing video games or watching TV in their spare time. The genders of the students and their responses are reported in the following table.Playing video gamesWatching TVGirls26 58Boys34 32(a) What percentage of the students are boys?(b) What percentage of the students prefer watching TV?

Answer 1

Part a.

From the given table, there are 34+32=66 boys surveyed. Then, the probability of get a boy is given by

`P(boy)=(66)/(150)=0.44`

where 150 is the total number of students surveyed. In percentage, this last result is equivalent to

`0.44*100\text{ \% = 44 \%}`

So, What percentage of the students are boys? Answer: 44 %

Part b.

From the given table, there are 58+32 = 90 students watching TV. Then, the probability to get a student who watches TV is given by

`P(\text{ watch TV\rparen=}(90)/(150)=0.6`

In percentage, this last result is equal to

`0.6*100\text{ \%=60 \%}`

So, What percentage of the students prefer watching TV? Answer: 60%