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Beta Company is manufacturing steel wire with an average tensile andstrength of 50 kilos. The laboratory tests 16 pieces and finds that the mean is

Beta Company is manufacturing steel wire with an average tensile andstrength of 50 kilos. The laboratory tests 16 pieces and finds that the mean is 47kilos and the standard deviation is 15 kilos. Are the results from sample differentwith the hypothesis that the population mean is 50 kilos using 0.05 significancelevel?

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