Need help with questions A, and B. I don't understand how to solve this problem.

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, 904 births consisted of 470 baby girls and 434 baby boys. In analyzing these results, assume that boys and girls are equally likely.

a. Find the probability of getting exactly 470 girls in 904 births.

b. Find the probability of getting 470 or more girls in 904 births. If boys and girls are equally likely, is 470 girls in 904 births unusually high?

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, 904 births consisted of 470 baby girls and 434 baby boys. In analyzing these results, assume that boys and girls are equally likely. a. Find the probability of getting exactly 470 girls in 904 births. b. Find the probability of getting 470 or more girls in 904 births. If boys and girls are equally likely, is 470 girls in 904 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? a. The probability of getting exactly 470 girls in 904 births is. (Round to four decimal places as needed.) b. The probability of getting 470 or more girls in 904 births is (Round to four decimal places as needed.) If boys and girls are equally likely, is 470 girls in 904 births unusually high? O A. Yes, because 470 girls in 904 births is not far from what is expected, given the probability of having a girl or a boy. O B. No, because 470 girls in 904 births is not far from what is expected, given the probability of having a girl or a boy. O C. Yes, because 470 girls in 904 births is far from what is expected, given the probability of having a girl or a boy. O D. No, because 470 girls in 904 births is far from what is expected, given the probability of having a girl or a boy. 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)? O A. The results from part (a) and part (b) are equal, so they are equally relevant. O B. The result from part (b) is more relevant, because one wants the probability of a result that is at least as extreme as the one obtained. O C. The result from part (a) is more relevant, because one wants the probability of a result that is exactly equal to the one obtained. O D. Neither of the results are relevant