Read this quote and then answer A B and C about this actual

Read this quote, and then answer A, B and C about this actual study. \"The Surgeon General\'s Report on Physical Activity and Health brings together overwhelming evidence linking physical activity (PA) to numerous health benefits and provides a solid foundation upon which to promote regular PA for citizens of all ages. . . . Accordingly, the leisure time activity patterns of adolescent boys and girls [in Iowa] were studied in order to gain a better understanding of the habitual PA patterns in this population. Data were collected from 6,025 children in grades 4 through 12 during fall 1996 using a self-report questionnaire administered during physical education classes. Depending upon age and gender, anywhere from 5% to 15% of Iowa youth report being completely sedentary. Contrary to the findings of most national-scope studies, there was little difference in the extent of participation in PA for boys and girls. Overall, approximately 58% of Iowa boys and 54% of Iowa girls report participating in PA 3 or more days per week for 30 min or more per occasion, figures that are far short of the national health goal of 75%. Findings also reveal that participation in leisure-time PA declines substantially with age.\" (Hensley and Major, RQES, March 1998, A-33)

A.What is the dependent variable in this study?

B.There are two independent variables in this study. Name them.

C.What was the authors\' conclusion regarding the null hypothesis for each independent variable?

a.State the null hypothesis.

b.Identify the decision (accept/reject).

c.What is the basis for the decision?

Solution

A. The dependent variable in the study is physical activities.

B. The independent variables are age and gender.

C. a.)Null hypothesis is there is no difference in the extent of participation in PA for boys and girls.

b.) Reject Ho.

c.)