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1. the equation of the regression line that relates percent blood alcohol, x, to reaction time in milliseconds, y, is y is

   a) Slope = -1.3 hence it tells us that for every percent increase in blood alcohol, we can predict reaction time to go down by 1.3 milliseconds so this is True.

   b) This is False because r = 0.92 shows a strong correlation which implies that the points do lie on a line very closely.

   c) This is False because correlation doesn’t imply causation.

   A regression line is a straight line estimate that represents the true, but unknown, linear relationship between two variables. The regression line equation is used to predict (or estimate) the values ​​of the response variable given the values ​​of the explanatory variables.

   To calculate the slope of the regression line, you need to divide the standard deviation of the y values ​​by the standard deviation of the x values ​​and multiply by the correlation between x and y. The slope can be negative, indicating a line that goes down instead of up.

   Learn more about regression line here: https://brainly.com/question/14563186

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