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What value of the mean would be used

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The production manager at a textile mill, believes that a new machine, producing cloth, is not working according to the company's specifications. The company requires that the cloth should have a mean breaking strength of 8 Kg. A sample of 71 pieces of cloth reveals a sample mean breaking strength of 9.9 Kg and a standard deviation of 0.8 Kg. The manager wants to do hypothesis test of the mean. What value of the mean would be used in the null and alternative hypotheses?

Reference no: EM133245542

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