Manufacturer claim at a level of signi?cance

Reference no: EM13966173

A test of the breaking strength of six ropes manufactured by a company showed a mean breaking strength of 6425 lb and a standard deviation of 120 lb. However, the manufacturer claimed a mean breaking strength of 7500 lb.

(a) Can we support the manufacturer's claim at a level of signi?cance of 0.10?

(b) Compute the p-value. What assumptions did you make for this problem?

Reference no: EM13966173

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