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ggplot(drawed, aes(x = .epred, fill = classtype)) +
geom_density(alpha = 0.5) +
scale_fill_manual(values = c("reg" = "#fc8d62", "small" = "#66c2a5")) +
labs(title = "Posterior for Exam Score",
subtitle = "Class size has no effect on exam score",
x = "Exam Score",
y = "") +
theme_minimal()