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Question 17

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The production manager at a textile mill, believes that a new machine, producing cloth, is not working according to the companys specifications. A sample of 58 pieces of cloth reveals a sample mean breaking strength of 42.6 Kg and a standard deviation of 0.7 Kg. The company requires that the cloth should have a mean breaking strength of 37 Kg. The manager wants to do a hypothesis test of the mean. What value of the mean would be used in the null and alternative hypotheses?
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