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, 820 births consisted of 427 baby girls and 393 baby boys. In analyzing these results, assume that boys and girls are equally likely. a. Find the probability of getting exactly 427 girls in 820 births

b. Find the probability of getting 427 or more girls in 820 births. If boys and girls are equally likely, is 427 girls in 820 births unusually high?

c. Which probability is relevant for trying to determine whether the technique is effective: the result from part (a) or or the results from part (b)?

d. based on the results, does it appear that the gender-selection technique is effective?
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