Tom asked the 20 members of the football squad at his school how long they spent on the internet by evening. 7 of them spent over 4 hours per evening online.
Tom used this information to estimate how many of the 1200 students at his school spent over 4 hours per evening on the internet.
a.) Assuming that tom is good with numbers, what was his estimate?
b.) Write down one thing that could be done to make the estimate more reliable.