Question

Smoking by Race for Males Aged 18-24 Smoker (S) Nonsmoker (N) Row Total White (W) 259 553 812 Black (B) 38 150 188 Column Total 297 703 1,000

a) What is the total number of smokers in the study?
b) What is the percentage of nonsmokers among Black males?
c) What is the total number of participants in the study?
d) What is the percentage of smokers among White males?

Answer 1

a) The total number of smokers in the study is 297. b) The percentage of nonsmokers among Black males is 79.79%. c) The total number of participants in the study is 1000. d) The percentage of smokers among White males is 31.92%.

Step-by-step explanation:

a) The total number of smokers in the study can be found by summing up the number of smokers in each race category. In this case, adding the number of smokers for White and Black males gives: 259 + 38 = 297.

b) To find the percentage of nonsmokers among Black males, we divide the number of nonsmokers (150) by the total number of Black males (188) and multiply by 100: (150 / 188) * 100 = 79.79%.

c) The total number of participants in the study can be found by summing up the row totals: 812 (White) + 188 (Black) = 1000.

d) To find the percentage of smokers among White males, we divide the number of smokers (259) by the total number of White males (812) and multiply by 100: (259 / 812) * 100 = 31.92%.