1. The self-identified computer expertise level of students in a grade 12 class is shown in the histogram (Newbie, Intermediate, Advanced, Expert, Guru). How many students are in the class? Computer Expertise Level 10 0 N A E G2. A bicycle shop sold 120 all-terrain models, 200 hybrid models, and 150 street models. The manager wants to send a satisfaction survey to 50 customers. If a stratified survey is desired, how many surveys should be sent to those who bought a hybrid model? (three marks) 3. A truckload with 200 bushels of soybeans arrives at a tofu factory. The quality control manager fills a container at random, and finds that it contains 0.034 bushels of soybeans of which 0.033 bushels are larger than the minimum acceptable diameter. If soybeans normally sell for $12.25 per bushel, how much should the factory pay for the truckload?(five marks)4. The average domestic airfares for 10 Canadian cities are shown. Which cities show a decrease in domestic airfare from 2010 to 2011? Average Domestic Air Fares for 10 Major Canadian Cities 2010 2011 200- 150- Average Air Fare (S 1004 501 lada to yo Ottawa Cz Vancouver Montreal Winnipeg fax Hall Saskatoon Regina Calgary Edmonton (four marks)5. A table shows the average income per worker in various occupations in Canada. Identify the independent and dependent variables.(three marks) 6. A headline claims "Huge Drop in Math Performance of Canadian Students," accompanied by the graph shown. Is the headline and/or the graph misleading? Give a reason for your answer.(four marks)Average Mark 76.5 76 75.5 75 74.5 2013 20147. An editorial points out that the crime rate has decreased from 2.3% to 1.5% from 2012 to 2013, concluding that the police budget should be cut. Is this a valid conclusion? Give a reason for your answer.(four marks) 8. In a class action lawsuit against a financial company that defrauded investors of an average of $5000, $12 000 000 was awarded to the 2500 plaintiffs involved in the suit. The company quotes the total amount in a newspaper ad, claiming that it is too much and should be reduced. Is this correct?(four marks)