1. In a survey of health habits, conducted among students of the FES Aragón in 2008 to the question about consumption of snuff, and the results were as follows:
a) 84.25% reported smoking more than two cigarettes a day
b) 10.72% reported smoking 1 cigarette per day
c) 5.03% reported not smoking
After a campaign against smoking is The same survey conducted in 2009 and the results were as follows
a) 80.07% reported smoking more than two cigarettes per day
b) 9.92% said smoking 1 cigarette per day
c) 10.01% said no smoking
get the variations for each case indicating whether an increase or decrease its size and mention
2. In a health survey conducted among students in the career of communication and journalism FES Aragón in 2009 found that 232 people suffered from hepatitis A, 348 suffered from hepatitis B, they found 540 cases of hepatitis C and 380 persons had no problems of hepatitis, the same survey was conducted in 2010 and the results were as follows; 200 cases of hepatitis A, 400 cases of Hepatitis B, Hepatitis C 520 cases and 380 people who had problems with hepatitis
a) To obtain the percentages in each case in 2009 and the same 2010
b) To obtain the percentage changes for each case and mention what kind of change in question.
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