Posted by Austin Knight on .
A researcher surveyed college students to study their opinion about the proposed change in smoking rules. The researcher asked a group of 30 students: 12 of them supported the change, 13 of them did not, and 5 had no opinion. This is not a binomial model because...
A. ...there are 3 possible outcomes, not 2.
B. ...the students who strongly supported the change and those who only mildly supported the change are counted the same.
C. ...less than half of the students supported the change.
D. 30 students are not enough for a good sample

MATH315 Elementry Statistics 
MathMate,
Some of the requirements of a binomial model are:
1. probability of success is known and does not vary over the experiment
2. Has exactly two outcomes (head/tail, success/failure).
3. has one or multiple steps
4. is a random experiment