Please keep the solving brief and simple:

PART A: MULTIPLE CHOICE [one {1} mark for each question] For questions 1 to 4, select the best answer. '1. Which situation involves bias when surveying customers at a restaurant? A Giving questionnaires to every tenth customer. B Giving questionnaires to big tippers. 0 Giving questionnaires to customers whose last name starts with an S. D Giving questionnaires to customers iftheir bill ends in a 0. 2. What is the name of a point that follows the trend in the data and affects the slope of the regression line? A outlier B bias point C influential point D erratic 3. The correlation coefcient, r, for a set of data is 0.5. Which percent represents the accuracy of predictions made from a model of this data? A 0% B 25% C 50% D 100% 4. What do you know about the slope of the line of best t if r2 = 0.5? A It is positive. B It is horizontal. C It is negative. D It is not horizontal. a} A dot plot is a statistical graph used to display data with two or more variables. b} Bias can be caused by the wording of survey questions. 6} Secondary data is information that is made available by others. d} The closer the correlation coefficient, r, is to 0, the better the regression equation ts the set of data. e} For a cause and effect relationship to exist, a change in the independent variable must result in a change in the dependent variable PART C: FULL SOLUTION: For the following questions, show your all work in the space provided. If you are using the TVM solver, you must write in your solutions the value that you are enteng into the calculator. 6. Describe one advantage of each type of survey delivery. (3 marks] a) lntemet b) telephone I3) personal interview 7. Give an example of each type of surwey,r question. (5 marks} a) Dichotomous b) Multiple Choice c) Rating Scale d) Completion e) Open-ended 3. Does each situation describe a cause and effect relationship? Explain- (4 marks} a) As the amount of time a football team has possession of the ball increases, their score increases. b] As students' heights increase, their grades increase