What is the probability that out of 250 babies born, 120 or fewer will be boys? Assume that boys and girls are equally probable,
and round your answer to the nearest tenth of a percent.
A. 97.5%
B. 3.3%
C. 75.7%
D. 28.5%
2 answers:
Answer:
Step-by-step explanation:
he;p me with mine first and then ill help u with urs ok plzzzzz
Answer:
D. 28.5 %
Step-by-step explanation:
The formula for it is
120
P(X ≤ 120) = ∑ 250C120 *0.5^120 * 0.5*130
0
which is best found using a binomial calculator.
I used one on line. The answer is D.
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Let
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