A random sample of 175 people surveyed were asked whether or not they support the death penalty. Seventy-five percent responded that they do not. a) Calculate the standard error of the proportion b) Calculate the 95 percent confidence interval (using z) c) Calculate the 99 percent confidence interval (using z) d) What do your results indicate?
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75), and n is the sample size (175). SE = sqrt(0.75(1-0.75)/175) SE = sqrt(0.1875/175) SE = sqrt(0.001071429) SE ≈ 0.0327 The standard error of the proportion is approximately 0.0327. Show more…
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