Probability and Statistics for Engineering and the Sciences
9th Edition
ISBN: 9781305251809
Author: Jay L. Devore
Publisher: Cengage Learning
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Chapter 13.4, Problem 43E
a.
To determine
Find the predicted value for surface area when cobalt is 2.6 and the temperature is 250.
Find its corresponding residual value.
b.
To determine
Whether it is reasonable to interpret that there will be a decrease in the surface area by 46 units if the cobalt content increases by 1 unit by holding other variables constant.
c.
To determine
Identify whether there is a linear relationship between response and the predictors.
d.
To determine
Test the significance of
e.
To determine
Find the 95% confidence interval for the true response when temperature is 500 and the cobalt content is 2.
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diesel engine. Determination of this number for a biodiesel fuel is expensive and time-
consuming. The article "Relating the Cetane Number of Biodiesel Fuels to Their Fatty Acid
Composition: A Critical Study" (J. of Automobile Engr., 2009: 565–583) included the
following data on x = iodine value (g) and y = cetane number for a sample of 15 biofuels
The iodine value (x) is the amount of iodine necessary to saturate a sample of 100 g of oil.
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y
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Chapter 13 Solutions
Probability and Statistics for Engineering and the Sciences
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