Could mud wrestling be the cause of a rash contracted by University of Washington students in the spring of 1992? Two physicians at the University of Washington student health center wondered this when one male and six female students complained of rashes after participating in a mud-wrestling event.Questionnaires were sent to all students in the residence halls who participated in the event.The questionnaire asked about the appearance of a rash and about attendance at the mud-wrestling event.The results,by gender,are summarized in the following table. The SPSS output for the above table is given below.The output includes the cell counts,the expected cell counts,the chi-square statistic,and its degrees of freedom.Expected counts are printed below observed counts. Chi-square = 2.289 + 1.098 + 1.098 + 0.527 = 5.002 df = 1,P-value = 0.0253
What conclusion can we draw from the above tables at the 5% significance level?
A)There appears to be evidence of an association between the gender of an individual attending the event and development of a rash.
B)Mud wrestling causes a rash,especially for women.
C)There is absolutely no evidence of any relationship between the gender of an individual attending the event and the subsequent development of a rash.
D)Development of a rash is a real possibility if you attend mud-wrestling events,especially if you attend them on a regular basis.

Question

Could mud wrestling be the cause of a rash contracted by University of Washington students in the spring of 1992? Two physicians at the University of Washington student health center wondered this when one male and six female students complained of rashes after participating in a mud-wrestling event.Questionnaires were sent to all students in the residence halls who participated in the event.The questionnaire asked about the appearance of a rash and about attendance at the mud-wrestling event.The results,by gender,are summarized in the following table.  The SPSS output for the above table is given below.The output includes the cell counts,the expected cell counts,the chi-square statistic,and its degrees of freedom.Expected counts are printed below observed counts.  Chi-square = 2.289 + 1.098 + 1.098 + 0.527 = 5.002 df = 1,P-value = 0.0253
What conclusion can we draw from the above tables at the 5% significance level?
A)There appears to be evidence of an association between the gender of an individual attending the event and development of a rash. 
B)Mud wrestling causes a rash,especially for women. 
C)There is absolutely no evidence of any relationship between the gender of an individual attending the event and the subsequent development of a rash. 
D)Development of a rash is a real possibility if you attend mud-wrestling events,especially if you attend them on a regular basis.

Quizplus · Accepted Answer

The chi-square test result shows a statistically significant association between the gender of the individual and the development of a rash. The P-value is less than 0.05, which indicates that the association is unlikely to be due to chance. However, we cannot conclude that mud wrestling causes a rash, as other factors may be involved.

Could Mud Wrestling Be the Cause of a Rash Contracted