Question: The types of raw material used to construct stone stools found at the archaeological site Casa del Rito are shown below. (Bandelier Archaeological Excavation Project edited by Kohler and Root). A random sample of 1486 stone tools is obtained from a current excavation site.

a. Test the claim that the regional distribution of raw materials fits the distribution at the current evaluation site. State null and alternative hypothesis.

b. Let α = 0.10. Find and sketch the rejection region associated with this hypothesis test.

c. Compute the χ 2 test statistic and state your conclusion.