Question

3.128 Who Smokes More: Male Students or Female Students? Data 1.1 includes lots of information on a sample of 362 college students. The complete dataset is available at StudentSurvey. We see that 27 of the 193 males in the sample smoke, while 16 of the 169 females in the sample smoke. We will investigate the difference in proportions of male and female students who smoke.

Answer 1

0.0452

Explanation:

Given that:

There are a total of 193 males in the sample.

Number of males who smoke = 27

There are a total of 169 females in the sample.

Number of females who smoke = 16

The ratio of people who smoke to the total number of people is given by the formula:

`\frac{\text{Number of people who smoke}}{\text{Total number of people in the sample}}`

So, the ratio of males who smoke is given as:

`(27)/(193)=0.1399`

And

The ratio of females who smoke is given as:

`(16)/(169) = 0.0947`

The difference between the ratio is = 0.1399 - 0.0947 = 0.0452