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Last year 70% voted yes in a survey. This year a similar survey is to be taken. If p = .70 again; allowed error is

Last year 70% voted yes in a survey. This year a similar survey is to be taken. If p = .70 again; allowed error is .10; and confidence interval is 90%, what is the necessary sample size rounded to nearest whole number? a. 57 O b. 114 O G. 178 O d. 228

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