Refer to the American Journal of Physical Anthropology (Apr. 2014) study of a mutation of blond hair genotypes, Exercise 2.141 (p. 91). Recall that for each of 550 Southwest Pacific islanders, the effect of the mutation on hair pigmentation was measured with the melanin (M) index, where M ranges between -4 and 4. Box plots showing the distribution of M for three different genotypes-CC, CT, and TT-are reproduced below (left column). Use the guidelines of this section and Exercise 5.51 (p. 253) to determine whether any of these distributions are normally distributed.

Transcribed Image Text:

Hair M by genotype CT CC TT -2 2 1.