Ann's Facebook page has 198,400 Likes. A survey was posted on Ann's Facebook page about whether people who Liked the page would by an ebook authored by her. Assume that the truth is 5% would buy.
a) What is the probability that a survey of 250 respondents would indicate 5% or more would buy an ebook?
b) Is it likely that the sampling procedure created a biased sample? Discuss, including suggestions for improvement if appropriate.