A survey was taken of drivers regarding the factors that they considered important in buying a new car. 84 said cost. 15 said cost but not gas mileage.72 said safety. 48 said all 3. 56 said cost and safety. 25 said gas mileage but not safety. 20 said gas milage but not cost. draw the venn diagram. how many said gas milage in the survey? how many said both gas mileage and safety?

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain