1. A study was performed to examine the personal goals of children in grades 4, 5, and 6. A random sample of students was selected for each of the grades from schools in Georgia. The students received a questionnaire regarding personal goals. They were asked what they would most like to do at school: make good grades, be popular, or be good in sports. Results are presented in the table below by the sex of the child.
The proportion of boys who chose the goal "be good in sports" and the proportion of girls who chose the goal "be good in sports" are
A. proportion of boys = 0.42, proportion of girls = 0.11.
B. proportion of boys = 0.70, proportion of girls = 0.30.
C. proportion of boys = 0.16, proportion of girls = 0.07.
2. A study was conducted to assess the effect of the drug Imipramine on the treatment of patients with agoraphobia and panic disorder. The three treatment groups included a control group treated with placebo, a low dose of 1.5 mg per kilogram of body weight, and a high dose of 3 milligrams per kilogram of body weight. There were 70 subjects, with 30 assigned at random to the control and 20 to each of the treatment groups. At the end of 24 weeks of treatment, subjects were classified as responders or non-responders to treatment based on a battery of psychological tests.
The proportion of responders in the experiment is
A. 0.3428.
B. 0.3667.
C. 0.4500.