Answer:
a. Is 12 percent an appropriate estimate for next year's Eastern European market share?
No its not, because Loyola is probably not the only company considering expanding its operations over eastern Europe. As more companies start operating there, Loyola's market share will decrease due to increased competition.
b. If not, does it likely overestimate or underestimate the actual Eastern European market share next year?
Loyola's future market share is overestimated because: