Part (b)Part (c)Part (a)For each age group, pick the midpoint of the interval for the X-value. (For the 80+ group, use 85.)Age groupMidpoint15-2419.525-393254.574.5Age15-2425-3940-6970-7980+40-6970-7980+Is it significant?O YesNoNumber of Driver Deaths per 100,000281885Calculate the least squares (best-fit) line. Put the equation in the fhof: ŷ = a +bx. (Round your answers to three decimal places.)= 22.533+ 0.0525X XPart (d)Find the correlation coefficient r. (Round your answer to four decimal places.)r= 0.1830X111823VPart (g)Part (h)Part (e)Find the estimated fatality rate for 23-year old drivers. (Use your equation from part (c). Round your answer to one decimal place.)20.00X deaths per 100,000Find the estimated fatality rate for 68-year old drivers. (Use you equation from part (c). Round your answer to one decimal place.)19.4X deaths per 100,000This answer has not been graded yet.Part (1)Use the two points in part (e) to plot the least squares line. (Upload your file below.)Choose File No file chosenWhat is the slope of the least squares (best-fit) line? (Round your answer to three decimal places.)-85.30X

The data values are:AgeMidpointNumber of driver deaths per 100,00015-2419.52825-39321840-6954.51170-7974.51880+8523The general form of least squares regression line is , where is the intercept and is the slope.Calculations:xyx2y2xy19.528380.257845463218102432457654.5112970.25121599.574.5185550.253241341852372255291955265.59817149.7520825017.5Intercept is computed as follows:Slope is computed as follows:Therefore, the least squares line is .Correlation coefficient is a measure that indicates the strength and direction of association between two variables. It ranges between -1 and +1.It is computed using the formula:Thus, the correlation coefficient is -0.2656.The estimated fatality rate for 23 year old drivers is:The estimated fatality rate for 68 year old drivers is:From step 4, the two points are: and .Slope of the line using these two points is:Thus, the slope of the least squares line is -0.060 or try -0.061.The least squares line is .The correlation coefficient is -0.2656.The estimated fatality rate for 23 year old drivers is: 21.4 deaths per 100,000.The estimated fatality rate for 68 year old drivers is 18.7 deaths per 100,000.The slope of the least squares line is -0.060.