CAL STATE LA A 2010 survey asked 827 randomly sampled registered voters in Calfo

Question

CAL STATE LA A 2010 survey asked 827 randomly sampled registered voters in Calfornia if they support or oppose coastal drilling for oil and natural gas. The results of the responses are summarized in the contigency table below. College degree Yes No Support 154 132 View on drilling Oppose 180 126 Don't know 104 131 You perform a chi-squared test for independence on these data to determine if there is an association between having a college degree and one's view on drilling for oil and natural gas. You find that 2-1 1.46 for these data. What is the p-value for this hypothesis test? Select one: Oa. Less than 0.001 O b. Between 0.001 and 0.005 c. Between 0.005 and 0.01 d. Between 0.01 and 0.02 e. Between 0.02 and 0.05 O Finish attempt... 662 21 MacBook Air

Explanation / Answer

The degrees of freedom in a chi square is determined by (r-1)(c-1). Here, we would have (3-1)(2-1) degrees of freedom and for a chi square of 11.46, the p-value would be 0.003247. Hence, the correct answer is b. Between 0.001 and 0.005

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