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    Northwest Florida State College
    Jun-1992 - May-1997

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    Northwest Florida State College,
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Category > Economics Posted 03 May 2017 My Price 9.00

A machine that fills cereal

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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Status NEW Posted 03 May 2017 06:05 PM My Price 9.00

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