In many animal societies, a role assumed by the adult male is a sentry, warning adult females and juveniles of approaching predators. Some students of animal behavior believe that this occurs in human society also. In one 4-month study in Seattle an investigator observed people crossing the street at an intersection with no traffic control. The observed behavior was the scanning behavior ("looking both ways") of adult males and females. The investigator reasoned that if the adult male assumed a protective sentry role, the scanning rate when alone would be less than when accompanied by an adult female. Data from this study is given below. Do these data support the investigator's hypothesis that the male scanning rate would be greater when accompanied by a female? Assume that is reasonable to regard these samples as representative of the corresponding populations. Provide statistical justification for your answer.

Question

In many animal societies, a role assumed by the adult male is a sentry, warning adult females and juveniles of approaching predators. Some students of animal behavior believe that this occurs in human society also. In one 4-month study in Seattle an investigator observed people crossing the street at an intersection with no traffic control. The observed behavior was the scanning behavior ("looking both ways") of adult males and females. The investigator reasoned that if the adult male assumed a protective sentry role, the scanning rate when alone would be less than when accompanied by an adult female. Data from this study is given below.  Do these data support the investigator's hypothesis that the male scanning rate would be greater when accompanied by a female? Assume that is reasonable to regard these samples as representative of the corresponding populations. Provide statistical justification for your answer.

Quizplus · Accepted Answer

The Answer of In many animal societies, a role assumed by the adult male is a sentry, warning adult females and juveniles of approaching predators. Some students of animal behavior believe that this occurs in human society also. In one 4-month study in Seattle an investigator observed people crossing the street at an intersection with no traffic control. The observed behavior was the scanning behavior ("looking both ways") of adult males and females. The investigator reasoned that if the adult male assumed a protective sentry role, the scanning rate when alone would be less than when accompanied by an adult female. Data from this study is given below.  Do these data support the investigator's hypothesis that the male scanning rate would be greater when accompanied by a female? Assume that is reasonable to regard these samples as representative of the corresponding populations. Provide statistical justification for your answer.

In Many Animal Societies, a Role Assumed by the Adult