Question 1 {1 point) According to a city politician, in the population of ALL Rochester residents, 70% support the tax.r increase to build a combined bus and train station. Which of the following correctly describes the variable being studied? 0 The variable is the amount of tax increase and it is NUMERICAL. O The variable is whether or not Rochester residents support the tax increase to build a combined bus and train station and it is CATEGORICAL. Question 2 {1 point) According to a city politician, in the population of ALL Rochester residents, 70% support the tax.r increase to build a combined bus and train station. A polling company will obtain a random sample of 1000 residents in Rochester and will ask whether they support an increase in taxes to pay for a combined bus and train station. Which of the following is the correct description of the SHAPE of the sampling distribution of phat? Q We can assume a normal model since n = 1000 is large enough. 0 After calculating (1000}(10ll1 .70} = 210, we can see that n = 1000 is large enough for a sampling distribution centered at .70. Question 7 (1 point) Saved A poll conducted in the United States found that 125 of 750 full time workers have been so angry in the past year that they wanted to hit a colleague. Estimate the proportion of all full-time workers who have been so angry in the past year that they wanted to hit a colleague, with 90% confidence. Using the confidence interval formula: p+ (Zerit) (SE) Which of the following is the correct Z critical value to be used to find the 90% CI? It can not be determined with the information given. Oz -1.6 OZ - 1.645 OZ = 2.576 Question 8 (1 point) A poll conducted in the United States found that 125 of 750 full time workers have been so angry in the past year that they wanted to hit a colleague. Estimate the proportion of all full-time workers who have been so angry in the past year that they wanted to hit a colleague, with 90% confidence. Pick the multiple choice response that represents the 90% confidence interval. (.13161, .20172) O (.13999, .19334) O (.14428, .18905)