Mathematics, 20.04.2021 15:20, bollipard1183

4.You plan to conduct a poll to estimate the percentage of consumers who are satisfied with long-distance phone service. You want to be 90% confident that your sample percentage is within 2.5 percentage points of the true value, and a Roper poll suggests that this percentage should be about 85%. How large must your sample be

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4.You plan to conduct a poll to estimate the percentage of consumers who are satisfied with long-dis...