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A drilling machine is used to make rivet holes in aluminium plates used in aircraft manufacture. If the standard deviation of the hole diameter exceeds

A drilling machine is used to make rivet holes in aluminium plates used in
aircraft manufacture. If the standard deviation of the hole diameter exceeds
0.01 millimetres there is an unacceptably high probability that the rivet will not
fit. A random sample of 15 rivet holes showed a sample average of 0.215
millimetres and a sample standard deviation of 0.008 millimetres. Perform an
appropriate hypothesis test to determine if there strong evidence (as the
engineer claims) to indicate the standard deviation of the hole diameter
exceeds 0.01 millimetres. 0.05 significane

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