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Ans : Probability that there will be at least one case of twins = 1-(79/80)^20

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16y ago

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What is the probability of the next four births at a hospital being all girls?

Assuming that the births at the hospital are equally likely to be of either gender then the answer is (1/2)4 = 1/16


What is the probability of having 4 boys in 10 births?

25


If probability of male birth is 0.52 What is the probability that there will be more girls than boys in 100 births?

0.48


What is the probability of your birthday falling on a weekend?

The answer depends on where in the world you are. In some places, where hospital [or maternity unit] births are more popular, the medical staff prefer to deliver babies during weekdays so that they can have time with their own families at weekends. As a result, the distribution of births is not uniform across days of the week.


Is there a higher probability of twins for women over 40?

Yes, because after 35 your probability for having multiple births goes up.


What is The probability of The next 7 births being girls?

There is no simple answer to the question because the children's genders are not independent events. They depend on the parents' ages and their genes.However, if you assume that they are independent events then, the probability that the next seven births are girls (given that the global probability of a girl is 0.48), is 0.00614 approx.


What is the probability of a birthday falling on Monday?

The standard answer for school work is 1/7. However, the reality may be slightly different since in parts of the world, particularly where induced hospital births are relatively common, it is claimed that births are brought forward so that medical staff can spend their weekend with their own families.


What is the probability of 6 members of one family being born on a different day of the week?

Births are not distributed uniformly over days of the week: there are fewer births at weekends. However, if you do assume that the distribution is uniform, then the probability is 6!/76 = 5040/117649 = 0.0428


What is the average number of births in new Zealand?

about 40,000


How many many births have there been today?

On average 340,500.


What is the average time between twin births?

The average time between twin births is around 10-15 minutes. However, it can vary widely depending on individual factors such as the position of the babies and the mother's health.


What is the probability of exactly 7 boys in 10 births when the birth of any child does not affect the probability of the gender of any other children?

This is a Binomial Probability; p=0.5, n=10 & x=7. Since you want the probability of exactly 7, in the related link calculator, after placing in the above values, P(x=7) = 0.1172 or 11.72%.

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