Fall 2018 - 0PM 2070-02 Final Exam Points: 25 Due Date: 12/17/2018 @ 11:59 pm There are total 15 questions in this exam. Questions should be answered using the Answer Sheet Template with your name at the top. All relevant R codes, numeric answers and comments should be provided. No screenshots are required. Note, only R should be used to answer the questions, as needed. Answers should be written in the appropriate row of the Answer Sheet (i.e., corresponding to the question number). The report should be individually uploaded in BB by the due date. Question A14 points! Your company is interested in the effect of the amount they spend on advertising on sales. Following is the monthly advertising/sales data for the last two years (in thousands of dollars). 1.2/180; 1.3/240; 1.4/200; 1.6/251; 1.8/233; 2.0/230; 2.1/301; 22/338; 24/309; 2.4/369; 2.6/337; 2.8/399; 3.0/355; 32/469; 3.4/424; 3.6/529; 3.8/480; 4.0514; 42/573; 44/642; 4.5/605; 4.8/642; 5.0/632; 52/702. 1. Draw a scatterplot. [Show your code in \"R Code\" section. Leave \"Answer" and Conclusion" sections blank.] 2. Determine correlation coefficient. [Show your code in \"R Code\" section. Show the answer in "Answer" section. Leave \"Comments" section blank.] 3. Determine the equation of regression line of sales over advertising and its pvalue. [Show your code in \"R Code" section. Show the answer in "Answer" section. Leave \"Comments" section blank.] 4. What would you predict that the sales would be if the company spends $6,000 on advertising? [Show your calculation in "R Code" section. Show the answer in "Answer" section. Leave "Comments" section blank.] Question B [3 points! A judge is expected to hear 20 appeals for trafc tickets. Each appeal has a 1/4 chance of being approved, independent of the other appeals. 5. Find the probability that fewer than four of the appeals will be approved. [Show your code in \"R Code\" section. Show the answer in \"Answer" section. Leave \"Comments\" section blank.] 6. Find the probability that exactly ten of the appeals will be approved. [Show your code in \"R Code\" section. Show the answer in \"Answer\" section. Leave \"Comments\" section blank.]