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Advanced Placement (AP), 07.03.2021 01:00 yasminnishkan
A random sample of Oak County residents was selected and asked, "To attract new employment to our area, are you in favor of giving incentives to industries that build plants that are environmentally friendly?" A 90 percent confidence interval for the proportion of residents in favor of the incentives was found to be 0.62 ± 0.06. Which statement is true?
A. At the 90% confidence level, the estimate of 0.62 is within 0.06 of the true proportion of county residents in favor of offering incentives to environmentally friendly industries to build plants in the county.
B. At the 90% confidence level, the majority of area residents are in favor of offering incentives to environmentally friendly industries to build plants in the county.
C. In repeated sampling, 90% of sample proportions will fall in the interval (0.56, 0.68).
D. In repeated sampling, the true proportion of county residents in favor of offering incentives to environmentally friendly industries to build plants in the county will fall in the interval (0.56, 0.68).
E. In repeated sampling, 90% of the time, the true proportion of county residents in favor of offering incentives to environmentally friendly industries to build plants in the county will be equal to 0.62.
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