Question

Researchers wanted to determine if having a supply of sugary snacks supply of sugary snacks in the bedroom is associated with obesity. The researchers administered a questionnaire to

368 twelve-year-old adolescents. After analyzing the results, the researchers determined that the body mass index of the adolescents who had a

supply of sugary snacks supply of sugary snacks in their bedroom was significantly higher than that of the adolescents who did not have a supply of sugary snack supply of sugary snacks

in their bedroom.

(d) In the report, the researchers stated, "These results remain significant after adjustment for socioeconomic status." What does this mean?

A.

It means that socioeconomic status is an explanatory variable and that including this variable in the study changes the results of the study.

B.

The researchers made an effort to avoid confounding by accounting for potential lurking variables.

C.

It means that socioeconomic status is not an explanatory variable and that including this variable in the study does not change the results of the study.

D.

It means that when the results are separated by socioeconomic status, there are significant differences between each socioeconomic status.

(e) Does a

supply of sugary snacks supply of sugary snacks in the bedroom cause a higher body mass index? Explain.

A.

Yes. A

supply of sugary snack supply of sugary snacks

in the bedroom is associated with obesity because of the body mass index of the adolescents who had a

supply of sugary snack supply of sugary snacks

in their bedroom was significantly higher than that of the adolescents who did not have a

supply of sugary snacks supply of sugary snacks

in their bedroom.

B.

No. It can only be said that a

supply of sugary snackssupply of sugary snacks

in the bedroom and obesity are associated because the body mass index of the adolescents who had a

supply of sugary snackssupply of sugary snacks

in their bedroom was significantly higher than that of the adolescents who did not have a

supply of sugary snackssupply of sugary snacks

in their bedroom.

C.

No. The results state that a

supply of sugary snackssupply of sugary snacks

in the bedroom causes a higher body mass index for twelve-year-old adolescents, but the conclusion cannot be made that it causes a high body mass index for all people.

D.

Yes. A

supply of sugary snackssupply of sugary snacks

in the bedroom causes obesity because the body mass index of the adolescents who had a

supply of sugary snackssupply of sugary snacks

in their bedroom was significantly higher than that of the adolescents who did not have a

supply of sugary snackssupply of sugary snacks

in their bedroom.

Answer 1