Build the book, add the vig to fair probabilities
De-vigging runs quotes to probabilities. Now run it the other way. Your model says the true probabilities are for the favorite and for the underdog, and you want to build in a margin.
What decimal odds should you post on each side?
Show a hint
De-vigging divides by the overround to remove margin. To add margin, multiply by it, then take reciprocals.
Your answer
This one is open-ended. Work it through, then check your reasoning against the full solution.