One dimension of bird beaks is "depth" —the height of the beak where it arises from the bird's head. During a research study on one island in the Galapagos archipelago, the beak depth of all Medium Ground Finches on the island was found to be Normally
distributed with mean u = 9.5 millimeters (mm) and standard deviation o = 1.0 mm. For a SRS of 5, there is a 0.7365
probability that & estimates u within + 0.5 mm.