D

An insurance actuary tracks the customer mass and the dosage of a certain medicine prescribed to customers. An approximate least-squares regression line was used to predict the dosage, in milligrams, from a given customer mass in kilograms.
800 viewed last edited 8 months ago
Anonymous
1



A. This customer was prescribed a dosage 50 mg higher than predicted based on the customer's mass.

B. This customer was prescribed a dosage 50 mg lower than predicted based on the customer's mass.

C. This customer has a mass 50 kg greater than predicted by the prescribed dosage .

D. This customers has a mass 50 kg lower than predicted by the prescribed dosage.



Sangeetha Pulapaka
0

Option B is the correct choice. The customer was prescribed a dosage 50 mg lower than predicted based on the customer's mass.


We can see visually that the indicated point is 50 units below the least-squares regression line.

This vertical distance describes how far away the actual dosage was from this customer's predicted dosage.

Since the point is below the line, the customer's dosage was less than the line predicted based on the customer's mass.

This customer was prescribed a dosage 50mg lower than predicted based on the customer's mass.