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A​ gender-selection technique is designed to increase the likelihood that a baby will be a girl....

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,837 births consisted of 438 baby girls and 399 baby boys. In analyzing these​ results, assume that boys and girls are equally likely.

a. Find the probability of getting exactly 438 girls in 837 births.

b. Find the probability of getting 438 or more girls in 837 births. If boys and girls are equally​ likely, is 438 girls in 837 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?

Math   Statistics-And-Probability   
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