Margin of error for survey
A survey of 400 rural voters indicated that 250 favor annexation by the city. What is the margin of error for this survey at the 95% level of confidence?
A .0474
B .049
C .0398
D .0411
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For what percentage of the samples did you reject the null hypothesis?5) The population mean in this problem really is 100 because of the way we set up the calculator so the null hypothesis is true. We are testing the claim that the mean is not 10
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