(b) Find the value of the chi-square statistic for the sample. (Round the expected frequencies to at least three decimal places. Round the test statistic to three decimal places.)What are the degrees of freedom? The types of raw materials used to construct stone tools found at an archaeological site are shown below. A random sample of 1486 stone tools were obtained from a currentexcavation site.RegionalPercent ofStone Tools61.3%10.6%11.4%13.1%Observed Number ofTools as Currentexcavation SiteRaw Material16017319653Use a 1% level of significance to test the claim that the regional distribution of raw materials fits the distribution at the current excavation site.BasaltObsidianWelded TuffPedernal chertOther9043.6%(a) What is the level of significance?

The null and alternative hypotheses are; (a) The level of significance is 0.01 or 1%.

Answered: The types of raw materials used to…

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(b) Find the value of the chi-square statistic for the sample. (Round the expected frequencies to at least three decimal places. Round the test statistic to three decimal places.)

What are the degrees of freedom?

The types of raw materials used to construct stone tools found at an archaeological site are shown below. A random sample of 1486 stone tools were obtained from a current
excavation site.
Regional
Percent of
Stone Tools
61.3%
10.6%
11.4%
13.1%
Observed Number of
Tools as Current
excavation Site
Raw Material
160
173
196
53
Use a 1% level of significance to test the claim that the regional distribution of raw materials fits the distribution at the current excavation site.
Basalt
Obsidian
Welded Tuff
Pedernal chert
Other
904
3.6%
(a) What is the level of significance?

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