The boiling point of water was measured at different locations of varying barometric pressures. A regression line of the data is y = 1.9x + 155.3, where y is the boiling point in degrees Fahrenheit and x is the pressure in inches of mercury,
Which statement best describes the meaning of the slope in the regression line?
A. For every 1 inch of mercury the pressure increases, the boiling point is expected to increase by 1.9 °F.
B. For every 1 inch of mercury the pressure increases, the boiling point is expected to increase by 155.3 E.
For every 1.9 inches of mercury the pressure increases, the boiling point is expected to increase by 1.9 °F.
OD. For every 1, 9 inches of mercury the pressure increases, the boiling point is expected to increase by 155, 3 °F.