Designed to produce rope with a breaking strain

Reference no: EM131064270

A machine is designed to produce rope with a breaking strain of 1000 N. A random sample of 36 pieces of rope had a mean breaking strain of 1012 N and sample standard deviation of 21 N. Is there evidence to suggest, at the 5 per cent level of significance, that the breaking strain has increased?

Reference no: EM131064270

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