You would like to estimate the mean price of milk (per gallon) in your city. You select a random sample of prices from different stores. The sample has a mean of
3.60 dollars and a standard deviation of 0.22 dollars. For each of the following sampling scenarios, determine which test statistic is appropriate to use when making inference statements about the population mean.
(In the table, Z refers to a variable having a standard normal distribution, and t refers to a variable having a t distribution.)



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