According to a recent Pew Research Center report, many American adults have made money by selling something online. In a random sample of 4579 American adults, 914 reported that they earned money by selling something online in the previous year. Assume the conditions for inference are met. Determine the critical value z* for a 98% confidence interval for a proportion. O 2* = 2.05 O z* = 1.645 2t = 1.96 O z* = 2.326 z* = 2.576

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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.