Levels Tought:
Elementary,Middle School,High School,College,University,PHD
Teaching Since: | Apr 2017 |
Last Sign in: | 290 Weeks Ago, 1 Day Ago |
Questions Answered: | 352 |
Tutorials Posted: | 351 |
MBA,PHD in Psychology
Northwest Florida State College
Jun-1992 - May-1997
Professor
Northwest Florida State College,
Aug-2006 - Nov-2015
12.     A machine that fills cereal boxes is supposed to be calibrated so that the mean fill weight is 12 oz. Let µ denote the true mean fill weight. Assume that in a test of the hypotheses H0 : µ = 12 versus H1 : µ /= 12, the P-value is 0.30.
a.   Should H0 be rejected on the basis of this test? Explain.
b.   Can you conclude that the machine is calibrated to provide a mean fill weight of 12 oz? Explain.
13.     A method of applying zinc plating to steel is sup- posed to produce a coating whose mean thickness is no greater than 7 microns. A quality inspector mea- sures the thickness of 36 coated specimens and tests
H0 : µ ≤ 7 versus H1 : µ > 7. She obtains a P-value of 0.40. Since P > 0.05, she concludes that the mean
thickness is within the specification. Is this conclusion correct? Explain.
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