Tom asked the 20 numbers of the football squad at his school how long they spend on the internet per evening. 7 of them spend over 4 hours per evening online. Tom used this information to estimate how many of the 1200 students are his school spend 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 to make the estimate more reliable