To finish this scenario, use the Confidence Interval Calculator Sheets 1,2,3 and the Area Gas Prices - Random Sample Excel file, linked in the Resources.
The Minneapolis Star Tribune newspaper has determined to write an article about gasoline prices in the Twin Cities area (Minneapolis and St. Paul). The paper has designed a survey and taken a simple random sample of regular, unleaded gas prices at 35 area stations. The results are in the Area Gas Prices - Random Sample Excel file. Use this data to make a 95% confidence interval for the average price of regular, unleaded gasoline in the area.