M E 345 Spring 2008 Professor John M. Cimbala Lecture 13 02/13/2008 Today, we will: •Review the pdf module: Hypothesis Testing•Do some example problems – hypothesis testing ExampleGiven: A manufacturer claims that their pressure sensor will sound an alarm when the pressure exceeds 120 psi. 20 tests are performed in a tank, in which the pressure is slowly increased. The pressure at which the alarm sounds is recorded for each test. The results are: •121 0 psix.=(sample mean – Note that we use xinstead of Pfor convenience) •S= 3.0 psi (sample standard deviation)To do: Should we accept the manufacturer’s claim?
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