A gender-selection technique is designed to increase the likelihood that a baby will be a girl. In the results of the gender-selection technique, 845 births consisted of 432 baby girls and 413 baby boys. In analyzing these results, assume that boys and girls are equally likely.
a. Find the probability of getting exactly 432 girls in 845 births.
b. Find the probability of getting 432 or more girls in 845 births. If boys and girls are equally likely, is 432 girls in 845 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?
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