A Collector of Grandfather Clocks Believes That the Price Received $$E ( y ) = \beta _ { 0 } + \beta _ { 1 } x + \beta _ { 2 } x ^ { 2 }$$

question 32

Multiple Choice

A collector of grandfather clocks believes that the price received for the clocks at an auction increases with the number of bidders, but at an increasing (rather than a constant) rate. Thus, the
Model proposed to best explain auction price (y, in dollars) by number of bidders (x) is the
Quadratic model $$E ( y ) = \beta _ { 0 } + \beta _ { 1 } x + \beta _ { 2 } x ^ { 2 }$$
This model was fit to data collected for a sample of 32 clocks sold at auction; a portion of the printout follows:


An outlier for the model is a clock with a residual that in absolute value. (Fill in the blank.)

• A) exceeds 133
• B) exceeds .893
• C) is less than 266
• D) exceeds 399

Discover the forms of early terrestrial life and their adaptations.

Contrast life forms between the Ediacaran and Cambrian periods.

Comprehend the rarity of fossilization and factors affecting it.

Interpret fossils to reconstruct behaviors and environments of extinct species.

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