"It is right to use animals for medical testing if it might save human lives." The General Social Survey asked 1152 adults to react to this statement.

A local school has both male and female students Each student either plays a sport or doesnt.

This two-way table shows the results of asking students if they prefer to have gym class in the morning or the afternoon A.How many students participate in the survey B. How many students in grade 8 prefer to have gym in the morning C. How many grade 10 students participated in the survey D. How many students prefer To have gym in the afternoon
$\begin{array}{|cccc|}\hline & \text{morning}& \text{afternoon}& \text{total}\\ \text{grade 6}& 15& 8& 23\\ \text{grade 8}& 18& 21& 39\\ \text{grade 10}& 12& 26& 38\\ \text{total}& 45& 55& 100\\ \hline\end{array}$

The following two-way contingency table gives the breakdown of the population of adults in a town according to their highest level of education and whether or not they regularly take vitamins:
$\begin{array}{|ccc|}\hline \text{Education}& \text{Use of vitamins takes}& \text{Does not take}\\ \text{No High School Diploma}& 0.03& 0.07\\ \text{High School Diploma}& 0.11& 0.39\\ \text{Undergraduate Degree}& 0.09& 0.27\\ \text{Graduate Degree}& 0.02& 0.02\\ \hline\end{array}$
You select a person at random. What is the probability the person does not take vitamins regularly?

Find the expected count and the contribution to the chi-square statistic for the (Control, Disagree) cell in the two-way table below.
$\begin{array}{|cccccc|}\hline & \text{Strongly Agree}& \text{Agree}& \text{Neutral}& \text{Disagree}& \text{Strongly Disagree}\\ \text{Control}& 38& 47& 2& 12& 11\\ \text{Treatment}& 60& 45& 9& 4& 2\\ \hline\end{array}$
Round your answer for the excepted count to one decimal place, and your answer for the contribution to the chi-square statistic to three decimal places.
Expected count ?
Contribution to the chi-square statistic ?

In this exercise , a two-way table is shown for two groups , 1 and 2 , and two possible outcomes , A nad B $\begin{array}{|cccc|}\hline & \text{Outcome A}& \text{Outcome B}& \text{Total}\\ \text{Group 1}& 30& 20& 50\\ \text{Group 2}& 40& 110& 150\\ \text{Total}& 70& 130& 200\\ \hline\end{array}$
a) What proportion of all cases had Outcome A?
b) What proportion of all cases are in Group 1?
c) What proportion of cases in group 1 had Outcome B?
d) What proportion of cases who had Outcome A were in group 2?

Suppose that each student in a sample had been categorized with respect to political views, marijuana usage, and religious preference, with the categories of this latter factor being Protestant, Catholic, and other. The data could be displayed in three different two-way tables, one corresponding to each category of the third factor.

A survey of 120 students about which sport , baseball , basketball , football ,hockey , or other , they prefer to watch on TV yielded the following two-way frequency table . What is the conditional relative frequency that a student prefers to watch baseball , given that the student is a girl? Round the answer to two decimal places as needed
$\begin{array}{|ccccccc|}\hline & \text{Baseball}& \text{Basketball}& \text{Football}& \text{Hockey}& \text{Other}& \text{Total}\\ \text{Boys}& 18& 14& 20& 6& 2& 60\\ \text{Girls}& 14& 16& 13& 5& 12& 60\\ \text{Total}& 32& 30& 33& 11& 14& 120\\ \hline\end{array}$
a) 11.67%
b) 23.33%
c) 43.75%
d) 53.33%