Question

Offshore drilling

A 2010 survey asked 826 randomly sampled registered voters in California "Do you support? Or do you oppose? Drilling for oil and natural gas off the Coast of California? Or do you not know enough to say?" Below is the distribution of responses, separated based on whether or not the respondent graduated from college.

                              College Grad    Not College Grad

Support                156                         125

Oppose                184                         126

Do not know        105                         130

Total                      445                         381

Conduct a hypothesis test to determine if the data provide strong evidence that the proportion of college graduates who do not have an opinion on this issue is different than that of non-college graduates. Use significance level α=0.05.

H0:propcollegegrad−propnotcollegegrad =_____

HA:propcollegegrad−propnotcollegegrad not=______

p-value: ______

Answer 1