Answer to Question #120625 in Statistics and Probability for Joseph Se

Question #120625

2. At a stop sign, some drivers come to a full stop, some come to a ‘rolling stop’ (not a full stop, but slow down), and some do not stop at all. We would like to test if there is an association between gender and type of stop (full, rolling, or no stop). We collect data by standing a few feet from a stop sign and taking note of type of stop and the gender of the driver. What are the hypotheses for testing for an association between gender and type of stop?

A. H0: Males and females are equally likely to come to a rolling stop.
HA: Males are more likely than females to come to a rolling stop.

B. H0: Gender and type of stop are associated.
HA: Gender and type of stop are independent.

C. H0: Males and females are equally likely to come to a full stop.
HA: Males and females are not equally likely to come to a full stop.

D. H0: Gender and type of stop are independent.
HA: Gender and type of stop are associated.

Expert's answer

D. H0: Gender and type of stop are independent.

HA: Gender and type of stop are associated.