A Harris Interactive poll conducted in Fall, 2002 (A-15) via a national telephone survey of adults asked, “Do you think adults should be allowed to legally use marijuana for medical purposes if their doctor prescribes it, or do you think that marijuana should remain illegal even for medical purposes.” The results showed that 80 percent of respondents answered “Yes” to the above question.

Assuming 80 percent of Americans would say “Yes” to the above question, find the probability when eight Americans are chosen at random that:

(a) Six or fewer said “Yes”

(b) Seven or more said “Yes”

(c) All eight said “Yes”

(d) Fewer than four said “Yes”

(e) Between four and seven inclusive said “Yes”