Research on George Gallup Research the polling done by George Gallup in the 1936 presidential election. Write a report on your findings and include information about the sampling technique and sample size. Next, research the polling done by Gallup for the 1948 presidential election. Did Gallup accurately predict the outcome of the election? What lessons were learned by Gallup?
Step 1 of 5) Research on George Gallup Research the polling done by George Gallup in the 1936 presidential election. Write a report on your findings and include information about the sampling technique and sample size. Next, research the polling done by Gallup for the 1948 presidential election. Did Gallup accurately predict the outcome of the election What lessons were learned by Gallup The level of confidence represents the proportion of intervals that will contain the parameter if a large number of different samples is obtained and is denoted 11 - a2 # 100%. For example, when constructing a 95% confidence interval, we would expect 95 of 100 different random samples from the same population to include the unknown parameter. In Section 9.1, we learned how to estimate a population proportion. An 11 - a2 # 100% confidence interval for the population proportion p is given by pn { za>2 # B pn 11 - pn 2 n , provided the data are obtained using simple random sampling or through a randomized experiment, npn 11 - pn 2 Ú 10, and the sample size is no more than 5% of the population size (independence requirement).
