Assignment

1. There is a study about the relationship between cold length and medicine taken. Total 200 subjects participate the study. Some subjects had short cold period,and some subjects had long cold period. And there are 105 subjects who had short cold period. Of them, 86 subjects took medicine. For the subject who had long cold period, 16 subjects took medicine.

1) Construct the contingency table using the information above.

2) What is the percentage of subjects with short cold periods who take medicine? and what is the percentage of subjects with long cold period who take medicine?

3) Summarize the relationship between cold length and medicine taken

2. Researcher are interested if gender is associated with handedness. Total 100 subjects are in the study. Forty-three of them are male and righthanded, 9 of them are male and left handed. Forty four subjects are female and right-handed. And 4 of them are female and lefthanded.

1) Construct the contingency table using the information above.
2) What is the percentage of male who are right-handed? and what is the percentage of female who are right-handed?
3) Summarize the relationship between gender and hadedness.