When the 2010 General Social Survey asked,

“Would you be willing to pay much higher taxes in order to protect the environment?” 459 people answered yes and 626 answered no. Software shows the following results to analyze whether a majority or minority of Americans would answer yes:

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Test of proportion = 0.5 vs not = 0.5 n Sample prop 95% CI z-Value P-Value 1085 0.423 (0.394, 0.452) -5.13 0.000

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(a) Specify the hypotheses that are tested.

(b) Report and interpret the test statistic value.

(c) Report and interpret the P-value as a probability.

(d) Explain an advantage of the confidence interval shown over the significance test.