Question

Question #80e24

Answer 1

There are 15 smokers (regardless of their sex)

Explanation:

Total population in your group is
`P=34 + 16 = 50`

Since 30% of this group smokes, you can compute number of smokers (S) regardless of their sex:
`S=0.30times50=15`

15 smokers, 5 more male-smoking compared to female smokers.

Therefore, you can write

`F + (F+5) =15`

where,

F stands for female smokers. Therefore `F=5` and male-smokers (M) is `F+5 = 10`.

Male-smokers = 10
Male-nonsmokers = 6
Female-smokers = 5
Female-nonsmokers = 29.

I did not understand the (b) part of the question. I provide the following result:

Smoking rate among males `= 10/16 = 62.5%`
Smoking rate among females `=5/34 = 14.7%`

Smoking rate in this population `=30%`