Description UNFORMATTED ATTACHMENT PREVIEW Exam Name___________________________________ MULTIPLE CH ...

---

Description UNFORMATTED ATTACHMENT PREVIEW Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Determine which scatterplot shows the strongest linear correlation. 1) Which shows the strongest linear correlation? A) B) Find the value of the linear correlation coefficient r. 2) x 47.0 46.6 27.4 33.2 40.9 y 8 10 10 5 10 A) 0.175 B) -0.175 1) C) 2) C) 0 3) x 62 53 64 52 52 54 58 y 158 176 151 164 164 174 162 A) 0 B) 0.754 D) 0.156 3) C) -0.775 D) -0.081 4) The paired data below consist of the costs of advertising (in thousands of dollars) and the number of products sold (in thousands): Cost 9 2 3 4 2 5 9 10 Number 85 52 55 68 67 86 83 73 A) 0.708 B) 0.235 C) 0.246 D) -0.071 4) 5) A study was conducted to compare the average time spent in the lab each week versus course grade for computer programming students. The results are recorded in the table below. Number of hours spent in lab Grade (percent) 10 96 11 51 16 62 9 58 7 89 15 81 16 46 10 51 A) 0.017 B) -0.335 C) -0.284 D) 0.462 5) Use the given data to find the equation of the regression line. Round the final values to three significant digits, if necessary. 6) x 2 4 5 6 6) y 7 11 13 20 ^ A) y = 0.15 + 3.0x ^ ^ B) y = 2.8x C) y = 3.0x 1 ^ D) y = 0.15 + 2.8x 7) x 6 8 20 28 36 y 2 4 13 20 30 7) ^ ^ A) y = -2.79 + 0.897x B) y = -2.79 + 0.950x C) y = -3.79 + 0.801x D) y = -3.79 + 0.897x ^ ^ 8) x 24 26 28 30 32 y 15 13 20 16 24 8) ^ ^ A) y = 11.8 + 0.950x B) y = -11.8 + 1.05x C) y = 11.8 + 1.05x D) y = -11.8 + 0.950x ^ 9) x 1.2 1.4 1.6 1.8 2.0 y 54 53 55 54 56 ^ A) y = 50.4 + 2.50x ^ 9) ^ ^ B) y = 50 + 3x C) y = 55.3 + 2.40x ^ D) y = 54 10) Two different tests are designed to measure employee productivity and dexterity. Several employees are randomly selected and tested with these results. Productivity 23 25 28 21 21 25 26 30 34 36 Dexterity 49 53 59 42 47 53 55 63 67 75 ^ ^ A) y = 10.7 + 1.53x B) y = 2.36 + 2.03x C) y = 75.3 - 0.329x D) y = 5.05 + 1.91x ^ ^ 2 10) Purchase answer to see full attachment Explanation & Answer: 10 questions User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.