More Help
Message posted by connie (via 66.66.149.118) on December 17, 2001 at 10:32 AM (ET)

The building specifications in a certain city require that the sewer pipe used in resident 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 tested each for breaking strength. The results (pounds per lineal foot) are shown here:

2,610 2,750 2,420 2,510 2,540 2,490 2,680

a. Compute mean and s for the sample.
[Write only the statistics that are needed)

b. Is there sufficient evidence to conclude that the manufacturer's sewer pipe meets the required specifications? Use a significance level of = 0.10.

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Re: More Help
Message posted by JG (via 128.8.22.87) on December 19, 2001 at 4:53 AM (ET)