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

1.Beta Company is manufacturing steel wire with an average tensile and strength of 50 kilos. The laboratory tests 16 pieces and finds that the mean is 47 kilos and the standard deviation is 15 kilos. Are the results in accordance with the hypothesis that the population mean is 50 kilos?

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