1. Suppose you had a group of 72 people. Of those 72 people, 36 were Republicans, 12 were Libertarian and 24 were Democrats. Now suppose you wanted to take a stratified random sample of 6 individuals where the strata were based on political ideology. Discuss how you would construct this sample and how many individuals from each political ideology would be included in your sample.

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.