Frankly I do not see how 50/50, or any fixed number, can be a representation of the unbiased state. The unbiased state is unknown.
If you look at what the orchestra did and remove factors you know are irrelevant for the applicants then you should move towards a more unbiased state independent of what the number actually is. The problem is to find out what bias you have. One way is to compare the people who apply with the people you hire. You can see what traits you select on, then you can decide if you think those traits are good or bad.
If you look at what the orchestra did and remove factors you know are irrelevant for the applicants then you should move towards a more unbiased state independent of what the number actually is. The problem is to find out what bias you have. One way is to compare the people who apply with the people you hire. You can see what traits you select on, then you can decide if you think those traits are good or bad.