An article gave the accompanying data on ultimate load kn

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Reference no: EM13617817

An article gave the accompanying data on ultimate load (kN) for two different types of beams. Assuming the underlying distributions are Normal, calculate and interpret a 99% CI for the difference between the true average load for the fiberglass beams and that for the carbon beams.

Type Sample Size Sample Mean Sample SD

Fiberglass grid 26 33.4 2.2

Commercial carbon grid 26 42.8 4.3

Reference no: EM13617817

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