This study compared the incidence in cardiovascular disease (CVD) among American Indians in the Strong Heart Study who were and were not exposed to environmental tobacco smoke (ETS) in the home over time. They further stratified by dietary quality (High vs. Low) to determine whether diet modified or confounded the association between ETS and CVD. Researchers hypothesized that high quality diets containing antioxidants may minimize the effect of ETS on risk of CVD. ETS Exposure Diet Quality Incidence of CVD per 1000 person-years
Yes High 18.63
Yes Low 32.52
Total 26.31
No High 17.99
No Low 26.14
Total 21.00

Required:
Calculate the crude (overall) and diet quality-stratified relative risk of CVD associated with environmental tobacco smoke exposure.

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.

step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.