21. Hair Color The hair color table that follows was adapted from the self-reported hair colors of a sample of Caucasian Americans born between 1957 and 1965 (currently 53–61 years old).

a. Is there sufficient evidence to conclude that the proportion of individuals with these hair colors differ for males and females? Use a 5.05.

b. Are there any cells with an expected number less than five? If so, combine those cells with those next to it and reanalyze the data. Do the end results differ?

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Light Light Blond Blond Brown Brown Black Red Total Males 4 46 45 176 23 10 304 Females 5 58 69 164 12 12 320