A restaurateur of a high-end restaurant sources a regional whiskey directly from Scotland. The cost for a single 750 mL bottle is 46 £ (pounds sterling). Suppose the exchange rate on the day the whiskey was bought was 1 USD = 0.72 £. What is the restaurateur's cost in dollars to pour a patron a 2-fluid-ounce shot of this whiskey?

Arandom sample of 15 observations is used to estimate the population mean. the sample mean and the standard deviation are calculated as 172 and 63, respectively. assume that the population is normally distributed. a. with 99 confidence, what is the margin of error for the estimation of the population mean? b. construct the 99% confidence interval for the population mean. c. construct the 95% confidence interval for the population mean. d. construct the 83% confidence interval for the population mean. hint: you need to use excel function =t.inv.2t to find the value of t for the interval calculation.