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If you look at the link below, the probability of a 28 year old female having a baby with Down syndrome is a little less than 1 in 1000.

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16y ago

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What is the probability of a down syndrome carrier male and a non-carrier female producing non-carrier children?

50%


What is the appropriate probability that a human offspring will be a female female?

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What is the Probability of having a female offspring?

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An aspiette is a female aspie meaning a female with Asperger's Syndrome?

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Given eight students four of which are females if two students are selected at random without replacement what is the probability that both students are female?

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What is the probability that a couple with three children will have at least one girl?

The individual probability that a child born will be female is 50% or 0.5.Using this we can calculate the probability that at least one of the children will be female by:calculating the probability that none of the children will be female and then subtracting this from 1.The probability that all the children are male is therefore 0.53 = 0.5 * 0.5 * 0.5 = 0.125.Thus the answer is 1 - 0.125 = 0.875 = 87.5%


How many sexes are possible in chromosomes?

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Is it true to state that female only are responsible for down syndrome?

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What is the apporoximate probability that a human offspring will be female?

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