A. find the probability of getting exactly 472472 girls in 934934 births. b. find the probability of getting 472472 or more girls in 934934 births. if boys and girls are equally likely, is 472472 girls in 934934 births unusually high? c. which probability is relevant for trying to determine whether the technique is effective: the result from part (a) or the result from part (b)? d. based on the results, does it appear that the gender-selection technique is effective?