Various types of doctors attended a large medical conference. Someone leading a session asked the 303030 doctors in attendance how many years of experience they each had. The 151515 dermatologists at the session had an average of 888 years of experience. For which population is 888 years a legitimate estimate of the average experience? Choose 1

(Choice A)

A The dermatologists at that session only

(Choice B)

B All doctors at that session only

(Choice C)

C All dermatologists at that conference only

(Choice D)

D All doctors at that conference only

(Choice E)

E All dermatologists

Found the The dermatologists at that session only

The 15 dermatologists at this session weren't randomly selected from a larger population. They may not be representative of all doctors or even all dermatologists on the question of experience.