4. The types of raw material used to construct stone stools found at the archaeo
ID: 3398128 • Letter: 4
Question
4. 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 are obtained from a current excavation site.
Raw Material
Regional Percent of Stone Tools
Observed Number of Tools at Current Excavation Site
Basalt
61.30%
906
Obsidian
10.60%
162
Welded tuff
11.40%
168
Pedernal chert
13.10%
197
Other
3.60%
53
Total
100%
n = 1486
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 = 0.10. Find and sketch the rejection region associated with this hypothesis test.
c) Compute the 2 test statistic and state your conclusion.
Raw Material
Regional Percent of Stone Tools
Observed Number of Tools at Current Excavation Site
Basalt
61.30%
906
Obsidian
10.60%
162
Welded tuff
11.40%
168
Pedernal chert
13.10%
197
Other
3.60%
53
Total
100%
n = 1486
Explanation / Answer
4. The types of raw material used to construct stone stools found at the archaeo
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