Determine whether the probabilities are computed using classical methods, empirical method or subjective method.
A- The probability of having 8 girls in an 8 child family is 0.390625%.
B- On the basis of a survey of 1000 families with 8 children, the probability of a family having 8 girls is 0.54%.
C- According to a sports analyst, the probability that the Chicago Bears will win their next game is about 30%.
D- On the basis of clinical trials, the probability of efficacy of a new drug is 75%.