residential areas have a mean breaking strength of more than 2,500 pounds per lineal foot. A manufacturer who would like to supply the city with sewer pipe has submitted a bid and provided the...

residential areas have a mean breaking strength of more than 2,500 pounds per lineal foot. A manufacturer who would like to supply the city with sewer pipe has submitted a bid and provided the following additional information: An independent contractor randomly selected seven sections of the manufacturer’s pipe and tests each for breaking strength. The results are shown below; 2,610, 2,750, 2,420, 2,510, 2,540, 2,490, 2,680. The following table is SPSS output for sewer pipes (in pounds):