Use the Following Information for Questions

Multiple Choice

Use the following information for questions:
A student doing an internship at a large research firm collected the following data, representing all of the studies the firm had conducted over the past 3 years.
-Suppose one study is to be randomly selected from all studies conducted over the past 3 years by this large research firm. What is the probability that this study used randomization?

A) 0.1167
B) 0.2333
C) 0.26
D) 0.3111