Oil and Gas Prices The average gasoline price per gallon (in cities) and the cost of a barrel of oil are shown below for a random selection of weeks in 2015. oil ($) 42.92 78.08 42.90 52.27 75.17 72.34 Gasoline (S) 2.453 3.014 2.720 2.949 3.041 3.084 The correlation coefficient for the data is r = 0.842 and a=0.05. Should regression analysis be done? O The regression analysis should not be done. X The regression analysis should be done. Find the equation of the regression line. Round the coefficients to at least three decimal places. y' = a+ bx b Find the cost of gasoline when oil is $56 a barrel. Round the answer to at least three decimal places. When oil is $56 a barrel, gas costs$ per gallon