Gallup previously found that the percent of Americans who worry
Gallup previously found that the percent of Americans who worry a great deal or a fair amount about global warming was 60% in 2009. Do the responses in this problem and Exercise 29 give evidence that concerns for global warming have decreased since 2009? a) Write appropriate hypotheses.
b) Check the assumptions and conditions.
c) Perform the test and find the P-value.
d) State your conclusion.
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