a) Find the equation of the regression line for the correlation of the hours worked vs. salary. Write your answer in form of y=ax+b, do not use the space bar, round the coefficients to the nearest tenths place. b) Find the correlation coefficient, round the coefficient to the nearest hundredths place. X, hours worked Y, salary earned 6 75 5.5 65 8 100 7.5 92 9 104 6.5 80 7 88 8.5 98 Question 12 8 people were asked, how many trips from car to the house they make after returning from the store, and how many bags they carry in one trip. a) Find the equation of the regression line for the data below. Write your answer in form of y=ax+b, do not use the space bar, round the coefficients to the nearest tenths place. b) Find the correlation coefficient, round the coefficient to the nearest hundredths place. X, trips to the car Y. number of bags per trip IM N W W A N 9 Question 13 You conducted the first step of the experiment, and you need to check the data before the second stage of the it. You found the correlation coefficient r = -0.88. What can you tell about the correlation of your data? O Weak correlation O No linear correlation O Strong negative correlation O Strong positive correlation