5.6.2 - Example: Bread Sandwiches

Data concerning sales at one student-run cafe may be retrieved from:

And more information about this data set is available at:

We want to know if there is evidence that the mean number of bread sandwiches sold is greater than 4 in the population of all days. This scenario results in the following hypotheses:

  • \(H_0: \mu = 4\)
  • \(H_a: \mu > 4\)