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Statistics: Z-test – #29520

Question: TTinc, a company that manufactures engines for NASCAR drivers, gathered data for all its plants. You are the chief engineer of the Oklahoma plant and want to test the claim that the Oklahoma plant’s distribution of life spans mimics the firm’s distribution. The table below contains the distribution of the life span of these...

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Statistics: Hypothesis tests: Z-test – #29435

Question: TTinc, a company that manufactures engines for NASCAR drivers, gathered data for all its plants. You are the chief engineer of the Oklahoma plant and want to test the claim that the Oklahoma plant’s distribution of life spans mimics the firm’s distribution. The table below contains the distribution of the life span of these...

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