This is best as a t-test because our sample size is smaller (less than 30) and we know the sample standard deviation, but not the population standard deviation. Ha: mean amount of espresso in a latte NOT= 4oz. Ho: mean amount of espresso in a latte = 4 oz 05 and run a one sample t-test to compare with the known population mean. A random sample of 25 lattes shows a mean of 4.6 oz of espresso and a standard deviation of. If this is not the case, they must increase or decrease the amount. They believe that each latte has an average of 4 oz of espresso. ![]() A coffee shop relocates to Italy and wants to make sure that all lattes are consistent.
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