Posted by Jackie on Wednesday, October 10, 2007 at 8:55pm.
If a husband and wife have a 50% chance of having a child with autism (50% of their children should be born with it). In reality, would this 50% ratio be more closely approached if they had FEW children or MANY children?

Biology  Ms. Sue, Wednesday, October 10, 2007 at 9:18pm
Statistically, the more children they have, the closer this 50% ratio would be.

Biology  maggie r, Wednesday, October 10, 2007 at 9:30pm
but why would this be so...is it because when you have less children the gene may have skipped them so it would be more likelier to show up in the other children?

Biology  Ms. Sue, Wednesday, October 10, 2007 at 9:38pm
There's a 50% chance each child will be normal. It's well within the range of probability that the first two children will be normal. But the more children the couple has, then statistically the odds will catch up with them.
Here's an easy way to check this out. You and a friend pretend you're answering a truefalse test. We know there's a 50% chance of getting an answer right. If you each randomly write 50 T  F answers, you should approach 50% agreement. But, on how many answers did you agree for the first two answers? On the first five answers? On the first 10 answers?
Answer This Question
Related Questions
 Statistics  Achusband and wife with brown eyes who have 0.75 probability of ...
 elementary statistics  56% of families had no children under the age of 18;17% ...
 Art  Thank you, Writeacher. I still have a few more paragraphs to check. 1)I ...
 Math  Algebra  A father in his will left all his money to his children in the ...
 math  Suppose that China’s population policy is modified so that every family ...
 sat math  At a certain hospital, 89 children were born in the month of June. If...
 Supportive learning environment  Which of the following activities most closely...
 MATH  A family has 4 children. A tree diagram or systematic list can be used ...
 Science  Phenylketonuria (PKU) is a human metabolic disease caused by the ...
 Probability  A husband and wife discover that there is a 10% probability of ...
More Related Questions