Problem 3. To obtain information on the corrosion-resistance properties of a certain type of steel conduit,...

Problem 3. To obtain information on the corrosion-resistance properties of a certain type of steel conduit, 25 specimens are buried in soil for a 2-year period. The maximum penetration (in mils) for each specimen is then measured, yielding the following values

50.2 50.7 50.5 51.5 48.9

46.6 48.3 50.2 50.5 51.6

52.9 53.3 53.4 48.5 53.4

52.7 52.1 51.3 49.9 50.2

51.8 51.9 51.0 52.2 51.8

The conduits were manufactured with the specification that true average penetration be at most 50 mils. What would you conclude?

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orchestra answered 1 year ago

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