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A manufacturer of composite material used in manufacturing of bicycle tubing claims it has a tensile...

A manufacturer of composite material used in manufacturing of bicycle tubing claims it has a tensile strength of at least 250 pounds per square inch. A random sample of 20 pieces of material is tested and the sample mean is 255.45 pounds per square inch and the sample standard deviation is 12.35 pounds per square inch. You perform a hypothesis test to determine if the average tensile strength of the population is at least 250 pounds per square inch. The population can be assumed to be normally distributed. A) state your null and alternate hypothesis. B) using the 5% level of significance, based on your hypothesis test, what is your conclusion based on your hypothesis test? State your conclusion in formal manner.

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