Maurice Tutor

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Algebra,Applied Sciences,Biology,Calculus,Chemistry,Economics,English,Essay writing,Geography,Geology,Health & Medical,Physics,Science Hide all
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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 05 Jan 2018 My Price 8.00

Bread Volume

47.     Bread Volume We can often use an analysis of variance with data that are not well matched to a linear regression, using dummy variables to avoid the need to model a curved relationship. In this example, a bakery ran an experiment to measure the effect of different recipes on the volume of commercial bread loaves (measured in milliliters). Customers gener- ally prefer larger-looking loaves rather than smaller loaves, even if the net weights are the same. In this experiment, the bakery varied the level of potassium bromate from 0 to 4 milligrams.16

(a)   Consider the linear regression of loaf volume on the amount of potassium bromate. Do the data appear to meet the assumptions required by the simple regression model?

(b)   Do the data appear to meet the conditions required for fitting an ANOVA? (Determine this visually, before fitting the ANOVA.)

(c)    Fit an ANOVA by treating the amounts of potas- sium bromate as identifying five categories. Can the bakery affect the volume of its loaves by vary- ing the amount of this ingredient?

(d)   If your software provides it, give the 95% Tukey confidence interval for the difference in volume produced with no potassium bromate and 2 mil- ligrams of potassium bromate. Is there a statisti- cally significant difference in volume?

(e)    Give the 95% Bonferroni confidence interval for the difference in volume produced with no potassium bromate and 2 milligrams of potas- sium bromate. Is there a statistically significant difference in volume?

(f)    Explain any differences between the conclu- sions of part (c) and the conclusions of parts

(d)   and (e).

Answers

Maurice Tutor
(5)
Status NEW Posted 05 Jan 2018 12:01 PM My Price 8.00

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