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Mathematics

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a manufacturing company knows that their machines produce parts that are defective on occasion. they have 4 machines producing parts, and want to test if defective parts are dependent on the machine that produced it. they take a random sample of 321 parts and find the following results. test at the 0.05 level of significance. machine 1 machine 2 machine 3 machine 4 defective 10 15 16 9 non-defective 72 75 66 58 can it be concluded that number of defective parts is dependent on machine?

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