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

Algebra ->  Probability-and-statistics -> 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      Log On


   

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) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

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

P = nCx* p%5Ex%2Aq%5E%28n-x%29 where p and q are the probabilities of success and failure respectively. 

nCx = n%21%2F%28x%21%28n-x%29%21%29

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