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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,

862862

births consisted of

448448

baby girls and

414414

baby boys. In analyzing these​ results, assume that boys and girls are equally likely.

a. Find the probability of getting exactly

448448

girls in

862862

births.

b. Find the probability of getting

448448

or more girls in

862862

births. If boys and girls are equally​ likely, is

448448

girls in

862862

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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