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The mean length of the lumber is supposed to be 8.5 feet. A builder wants to check whether the shipment of lumber she receives has

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The mean length of the lumber is supposed to be 8.5 feet. A builder wants to check whether the shipment of lumber she receives has a mean length different from 8.5 fee What are the null and alternative hypotheses? O Ho: H = 8.5; H1: u 8.5 O Ho: H = 8.5; H1: H = 8.5

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