Homework Help: statistics

Posted by shruti on Monday, September 5, 2011 at 1:25pm.

the breaking strength of a cable known to be normally distributed with a mean of 4000kg and a standard deviation of 25kg.The manufacture prefers that at least 95% of its products meet a strength requirement of 4050 kg.Is this requirement being met? If not, by changing the process parameter what would the process mean target would be?

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