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In: Statistics and Probability

Among the four northwestern states, Washington has 51% of the total population, Oregon has 30%, Idaho...

Among the four northwestern states, Washington has 51% of the total population, Oregon has 30%, Idaho has 11%, and Montana has 8%. A market researcher selects a sample of 1000 subjects, with 450 in Washington, 350 in Oregon, 160 in Idaho, and 40 in Montana. At
the 0.05 significance level, test the claim that the sample of 1000 subjects has a distribution
that agrees with the distribution of state populations.

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