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quiz6 1201 - wishes to test H μ = 172 millimeters versus H...

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EGN 3443 Probability & Statistics for Engineers Quiz 6 (10 points) Open book/notes, 20 minutes December 01, 2008 Name: U#: Please check below, if applicable APEX Lakeland Sarasota Good luck!
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A consumer products company is formulating a new shampoo and is interested in foam height (in millimeters). Foam height is approximately normally distributed with a standard deviation of 18 millimeters. The company
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Unformatted text preview: wishes to test H : μ = 172 millimeters versus H 1 : μ > 172 millimeters, using the results of n = 12 samples. a) Find the type I error probability α if the rejection region is ¯ x > 187. (5 points) b) Find the type II error probability β if the true mean foam height is 173. (5 points)...
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