At Lehigh University, 69% of the full-time faculty members are tenured. All of the full-time faculty members, and only them, attend a mandatory seminar. Some of the activities they participate in during this seminar are interactive. Faculty members are selected to come up to the front of the room. Each selection is random and independent of each other.

1. What is the probability that the first professor selected for an activity is tenured?

1. What is the mean number of tenured faculty members who are selected for an activity before the first non-tenured faculty member?