Use the following to answer the questions below:
A biologist collected data on a sample of 20 porcupines. She wants to be able to predict the body mass of a porcupine (in grams) based on the length of the porcupine (in cm).
Her least squares regression equation is where M is the mass.
-Predict the body mass of a porcupine that is 51 cm long. Report your answer using one decimal place.
A) 5,866.6 g
B) 5,661.0 g
C) 5,732.5 g
D) 6,139.2 g

Question

Use the following to answer the questions below:
A biologist collected data on a sample of 20 porcupines. She wants to be able to predict the body mass of a porcupine (in grams) based on the length of the porcupine (in cm). 
Her least squares regression equation is  where M is the mass.
-Predict the body mass of a porcupine that is 51 cm long. Report your answer using one decimal place.
A) 5,866.6 g 
B) 5,661.0 g 
C) 5,732.5 g 
D) 6,139.2 g

Quizplus · Accepted Answer

11eeb2d3_8e28_dc84_b9aa_b10f2d9a7ef1_TBW1049_11 = -3,089 + 175.6(51) = 5,866.6
A porcupine that is 51 cm long is predicted to have a body mass of 5,866.6 g.

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