2 Andy and Jessica are doing a survey about musical preferences. They plan to choose a representative sample of six students from the 256 students at their college.
- Andy suggests that they go to the music building during the lunch hour and choose six students at random from the students who are there.
Give a reason why this method is unsatisfactory.
- Jessica decides to use another method. She numbers all the students in the college from 1 to 256. Then she uses her calculator and generates the following random numbers.
$$\begin{array} { l l l l l }
204393 & 162007 & 204028 & 587119 & 207395
\end{array}$$
From these numbers, she obtains six student numbers. The first three of her student numbers are 204, 162 and 7.
Continue Jessica's method to obtain the next three student numbers.