In 2011, the u. s. center for control and prevention (cdc) conducted a survey to track a wide variety of risky behavior by american youth. the following table summarizes the responses of 12th grade males and females and their helmet wearing habitats. which of the following statements are true? select all that apply.

a. 1,067/1825 is a joint relative frequency.
b. 93/1160 is a conditional relative frequency .
c. 93/1160 is a marginal relative frequency
d. 1160/2027 is a joint relative frequency.
e. 1825/2027 is a conditional relative frequency.
f.867/2027 is a marginal relative frequency.
g.1067/2027 is a joint relative frequency.