An undergraduate business student studies diligently in the library late in the term in anticipation of an outstanding performance on her final exams. She asks a friend to spy on her at random intervals to determine what percentage of time she is actually studying. Over the course of three days, her friend records the following observations:

Based on this work sample, what percentage of time was the student actually studying?

Question

An undergraduate business student studies diligently in the library late in the term in anticipation of an outstanding performance on her final exams. She asks a friend to spy on her at random intervals to determine what percentage of time she is actually studying. Over the course of three days, her friend records the following observations:
  
Based on this work sample, what percentage of time was the student actually studying?

Quizplus · Accepted Answer

The Answer of An undergraduate business student studies diligently in the library late in the term in anticipation of an outstanding performance on her final exams. She asks a friend to spy on her at random intervals to determine what percentage of time she is actually studying. Over the course of three days, her friend records the following observations:
  
Based on this work sample, what percentage of time was the student actually studying?

An Undergraduate Business Student Studies Diligently in the Library Late