I Believe That There Is An $80 \%$ Chance That I Will Get the Promotion

True/False

I believe that there is an $80 \%$ chance that I will get the promotion. The day before my supervisor tells me that he has "valuable" information about the chance that I get promoted. He tells me that there is an $80 \%$ chance that I will get the promotion. My supervisor's forecast was valuable because it contained new information.