Does 'She might add that there is a 50 percent probability that demand will fall between six and thirteen units.' logically set the stage for the hypothesis 'She might add that there's a 50 percent chance the demand would fall between six and thirteen units.'
She might add that there is a 50 percent probability that demand will fall between six and thirteen units.###She might add that there's a 50 percent chance the demand would fall between six and thirteen units.