Ramona used the regression equation y = .444x â€" 21.29, where x represents height and y represents shoe size, to predict the approximate height of a man who wears a size 8.5 shoe. 1. y = .444 (8.5) minus 21.29. 2. y = 3.774 minus 21.29. 3. y = negative 17.52. ramona determined that her answer was incorrect because a man who is â€"17.52 inches tall does not make any sense. what was ramona’s mistake? she substituted the 8.5 for the wrong variable. she should have added .444 and 8.5. the value for y should be positive. the solution of â€"17.52 should be the shoe size.
