Do you think 30 teenagers is a large enough sample to represent all the teenagers in New Zealand? and why?

I'm conducting a survey but I'm a little unsure. Help would be much appreciated, thanks :) Do you think 30 teenagers is a large enough sample to represent all the teenagers in New Zealand? and why?
It's a Start!Do you think 30 teenagers is a large enough sample to represent all the teenagers in New Zealand? and why?
not even close.





How much $ and time do you have to conduct this survey? .





Best way to do this is to hook up with high schools (ages 13-18)around New Zealand and send your servey out.






It would be good if you had more than that but if those 30 are representative of all the different people of New Zealand then it seems as if you would get a good idea of their ideas, values etc. from your survey.
omg im a new zealander(16) and i dont even know lol theres only 4 million people anyway so a small number should do lol.
put the survey up on yahoo answers :) - im an nz teenager and id answer it if you needed a larger sample size

scar cream