A sample of 500 college students participated in a study designed to evaluate the level of college students' knowledge of a certain group of common diseases. The following table shows the students classified by major field of study and level of knowledge of the group of diseases: Knowledge of Diseases Poor Total 122 378 500 Major Good Premedical Other 31 19 359 Total 50 450 Do these data suggest that there is a relationship between knowledge of the group of diseases and major field of study of the college students from which the present sample was drawn? Let a.05
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The null hypothesis (H0) is that there is no relationship between the major field of study and the knowledge of the group of diseases. The alternative hypothesis (H1) is that there is a relationship between the major field of study and the knowledge of the Show more…
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Use data on college students collected from the American College Health Association-National College Health Assessment survey $^{18}$ conducted in Fall 2011 . The survey was administered at 44 colleges and universities representing a broad assortment of types of schools and representing all major regions of the country. At each school, the survey was administered to either all students or a random sample of students, and more than 27,000 students participated in the survey. Binge Drinking Students in the ACHANCHA survey were asked, "Within the last two weeks, how many times have you had five or more drinks of alcohol at a sitting?" The results are given in Table $2.13 .$ Table 2.13 In the last two weeks, how many times have you had five or more drinks of alcohol? $$\begin{array}{l|rr|r}\hline & \text { Male } & \text { Female } & \text { Total } \\\hline 0 & 5402 & 13,310 & 18,712 \\1-2 & 2147 & 3678 & 5825 \\3-4 & 912 & 966 & 1878 \\5+ & 495 & 358 & 853 \\\hline \text { Total } & 8956 & 18,312 & 27,268 \\\hline\end{array}$$ (a) What percent of all respondents answered zero? (b) Of the students who answered five or more days, what percent are male? (c) What percent of males report having five or more drinks at a sitting on three or more days in the last two weeks? (d) What percent of females report having five or more drinks at a sitting on three or more days in the last two weeks?
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