Question

2.3.3 quiz: two - way frequency tables
a medical company tested a new drug for possible side effects. the table shows the relative frequency that a study participant experienced the side effect.

	side effect	no side effect
teens	0.19	0.31

do these data suggest an association between age and experiencing side effects?
a. yes. a greater percentage of adults experienced side effects than teens.
b. no. adults were as likely to experience side effects as teens.
c. no. a greater percentage of both adults and teens had no side effects.
d. yes. a greater percentage of teens experienced side effects than adults.

Explanation:

Step1: Compare side - effect relative frequencies

The relative frequency of adults experiencing side - effects is 0.05 and for teens is 0.19.

Step2: Analyze the comparison result

Since 0.19>0.05, a greater percentage of teens experienced side - effects than adults, which suggests an association between age and experiencing side - effects.

Answer:

D. Yes. A greater percentage of teens experienced side effects than adults.