Develop a 95% confidence interval estimate of the population mean sales price and population mean number of days to sell for Gulf View condominiums

Need Help with some statistic questions.

Developa 95% confidence interval estimate of the population mean sales price andpopulation mean number of days to sell for Gulf View condominiums.Interpret your results.
Assumethe branch manager requested estimates of the mean selling price of GulfView condominiums with a margin of error of $40,000 and the mean sellingprice of No Gulf View condominiums with a margin of error of $15,000.Using 95% confidence, how large should the sample sizes be for each?

Based on data from attached Spreadsheet.

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