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stepladder [879]
3 years ago
5

(HELP!)

Mathematics
2 answers:
denis-greek [22]3 years ago
7 0

Let X be the random variable denoting the number of girls that are born. Then X has a binomial distribution on n=125 babies and probability of getting a girl p=0.5. The probability we want is

\mathbb P(X\ge60)=\displaystyle\sum_{x=60}^{125}\binom{125}x0.5^{125-x}0.5^x\approx0.704=70.4\%

PSYCHO15rus [73]3 years ago
6 0

Answer:

B. 70.4% (APEX)

Step-by-step explanation:

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