Statistics For Business And Economics

An Izod impact test was performed on 15 specimens of PVC pipe. The ASTM standard for this material requires that Izod impact strength must be greater than 1.0 ft-lb/in The sample average and standard deviation obtained were X= 1.128 and s = 0.311, respectively. Test Ho: p = 1.0 versus H1: u > 1.0 using a = 0.01 and draw conclusions.



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