SOLUTION: A researcher surveyed college students to study their opinion about the proposed change in smoking rules. The researcher asked a group of 20 students � 11 of them supported the cha

Question 471546: A researcher surveyed college students to study their opinion about the proposed change in smoking rules. The researcher asked a group of 20 students � 11 of them supported the change, 6 of them did not, and 3 had no opinion. This is not a binomial model because
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi,

Note: The probability of x successes in n trials is: 

P = nCx*  where p and q are the probabilities of success and failure respectively. 

nCx = 

Above appropriate for use with a binomial model:



In this case p & q cannot be determined because some of the students surveyed

had no opinion and could not be counted in the numbers determining  p or q

and therefore this is not a binomial model 

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