The american heart association is about to conduct an anti-smoking campaign and wants to know the fraction of americans over 21 who smoke. step 1 of 2 : suppose a sample of 292 americans over 21 is drawn. of these people, 225 don't smoke. using the data, estimate the proportion of americans over 21 who smoke. enter your answer as a fraction or a decimal number rounded to three decimal places

Step-by-step explanation:

Out of 292 drawn Americans over 21, 225 of them don't smoke. That means the rest of them are smokers:

So there are 292 - 225 = 67 smokers here.

We can then calculate the portion of Americans over 21 who smoke:

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl