Suppose that Amazon ran a survey of its users and asked if they preferred to read a digital book or hard copy book. Out of 15,987 responses, 9,784 reported that they preferred a digital book. Given that 9784 is 61% of the 15,987 responses, should we conclude that the majority of the general public prefer digital books? 1.Who is likely to respond to the question? 2. Is the sample of respondents likely to be representative of the general population? Why or why not?

3. Should these responses be used to form conclusions about the general population?