32(a) The survey give a sample proportion of student.
1;15O wear surverd accourdind to the description(100 student)
2;and90% responsded and 108 unfqmiliqr our sample proportion 0.8
3;The sample proportion is our best estimater
4; so 0.8*15,000=12,000 student
B;The result of the sample survey shold be somewhat reliable- we have high responsebal rate. so the limite error itroduced by non reponse.
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