The effect of time of day a science class is taught on test scores is being studied in an experiment. Which of these is most likely to be an extraneous factor that could also affect scores

  consider  the  following scenario,  then describe  how  you might conduct  a  study using  ansrs,  convenience sample, and a  voluntary response sample.  you  are  interested  in  parents'  opinion  of the  war  in  iraq.  your population  is  parents  of  high school students.  your question  is, "do you  believe that the  war  in 

So what is the question

Answer/runoff from agricultural feedlots

Idont get what your asking