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, 948948 births consisted of 492492 baby girls and...

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,

births consisted of

baby girls and

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

a. Find the probability of getting exactly

girls in

births.

b. Find the probability of getting

or more girls in

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

girls in

births unusually​ high?