14. Egyptians. Some archaeologists theorize that
Chapter 24, Problem 14(choose chapter or problem)
14. Egyptians. Some archaeologists theorize that ancientEgyptians interbred with several different immigrantpopulations over thousands of years. To see if there is anyindication of changes in body structure that might haveresulted, they measured 30 skulls of male Egyptiansdated from 4000 B.C.E and 30 others dated from 200 B.C.E.(A. Thomson and R. Randall-Maciver, Ancient Races ofthe Thebaid, Oxford: Oxford University Press, 1905)a) Are these data appropriate for inference? Explain.b) Create a 95% confidence interval for the difference inmean skull breadth between these two eras.c) Do these data provide evidence that the mean breadthof males skulls changed over this period? Explain.
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