Question

E6

College administrations are continually perplexed about how to deal with hazing issues on their campuses. But how widespread is hazing, and, in fact, what constitutes hazing anyway? One study tried to get an objective handle on this persistent college phenomenon by carrying out a large survey of college and university students on 53 campuses. The study leaders defined hazing as "any activity expected of someone joining or participating in a group that humiliates, degrades, abuses, or endangers them regardless of a person's willingness to participate."

The two types of activities receiving the highest rate of participation overall were "participate in a drinking game" and "sing or chant by yourself or with a few selected team members in a public situation that is not related to the event, game, or practice." The table below shows the sample sizes for those responding and the proportions for each activity across a variety of typical campus groups. In comparing these groups, regard the samples as being independent even though some of the same students may be in more than one group.

Campus Group	n	Drinking Game	Sing or Chant
Varsity athletics	635	0.47	0.25
Social fraternity or sorority	1290	0.56	0.33
Service fraternity or sorority	543	0.27	0.17
Intramural sports	1060	0.28	0.13
Performing arts	820	0.24	0.27
Academic clubs	1061	0.10	0.06

a. Estimate the difference, with 95% confidence, between the proportions engaged in drinking games among those in varsity athletics as compared to those in social fraternities or sororities.

Round the answers to three decimal places.

_____________  _____________

Do the same for those who have been involved in singing or chanting.

Round the answers to three decimal places.

__________  __________

b. Estimate the difference, with 90% confidence, between the proportions engaged in drinking games among those in service fraternities or sororities as compared to those in performing arts.

____________  ____________

Do the same for those who have been involved in singing or chanting.

___________  ____________

Answer 1

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0.08 t 0.0431 Pi 543 22o 82o 8Q0

-003 t 96 (0.03-0-0480 2ノ0.03 +0-04802 m2 = 543 Ve-n Now the 9A7) (i-0-11 t3 88o

6.27x 0.73 0-17 0.33 5Lk3 820 SO0 543 o .iti.9 ς - 0.0561 0'ル39