Question: A medical study followed 12 pairs of subjects (Father and Son) until the sons were fully-grown, typically at age 20. The researcher claims there is a relationship between the height of the Father (in inches) and that of the full-grown son. Does the data show that and, regardless of the result, is the data reliable at the 5% level of significance? (Hint: to answer the 'reliability' issue a hypothesis test will be needed.)