Question: The median age of a tourist to Aruba in the summer of 2007 was believed to be 41 years. A random sample of 18 tourists gives the following ages:
25, 19, 38, 52, 57, 39, 46, 46, 30, 49, 40, 27, 39, 44, 63, 31, 67, 42
Test the hypothesis against a two-tailed alternative using α = 0.05.