lengths of pregnancies are normally distributed with a mean of 266 and a standard deviation of 16 days. What percentage of babies are born between 250 -266 days?
Thats all the info i have, thanks
Thats all the info i have, thanks
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I don't think you need to be a science math expert - surely they cover this in high school. Try thinking about it yourself.
Draw a bell curve and mark the mean in the middle and mark the each of the first three standard deviations away from the mean on each side. Then think about which area you want to identity.Originally posted by pags11Originally posted by BuddyBearOriginally posted by curiousComment -
pregnancy stat problems taco, are way harder than one might expectComment -
ive been told 55, 57, 66, 33 and 34 and 37 so far from diff people on other boardsComment -
is ganchrow around??
mabye pm him this questionComment -
Use your brain. Clearly anyone who says the answer is over 50% is an idiot.ive been told 55, 57, 66, 33 and 34 and 37 so far from diff people on other boardsComment -
I forgot. We need to know what colour the babies are.Originally posted by duritoOriginally posted by pags11Originally posted by BuddyBearOriginally posted by curiousComment -
shrugsComment -
Z=(X-mean)/deviation
so we want to find the probability of Z between Z=(250-266)/16=-1 and Z=(266-266)/16=0
Looking at a z table, we see that is 0.3413.Comment -
ttwarrior, it depends on the diameter of the vagina
mathyComment -
Funny thing is this is exactly how sports handicapping threads sound on the forum.
person A asks a non too interesting question
person B tells him to figure out for himself
person c says somebody's an idiot
person d says it all depends on some irrelevant factor.
Are we getting too predictable here.
bird bird da bird's da wordComment -
34% and I do not feel like showing work.
But it is 1/2 of a standard deviation.Comment -
Originally posted by mathdotcom ^
TWarrior....more than likely you're the fatherComment -
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a medical forum likely gives you a better answer ?
I'd guess few pregnancies go beyond 16 days of the estimate, and many more than that are earlier....sometimes much earlier !
It seems there is no potential to go beyond 30 days overdue, but you can go much shorter...premature....so I favor the under.
Seems you'd need the exact date of conception ? A doctor can only estimate !
Given this info ( and not knowing exact date of conception)...I'd go under, if betting.... covers shit like a miscarriage, induced delivery, mother's death etc.
more under than over possibilities, IMO.
IMO, key is knowing the conception date, Docs guess at unknown dates. How many couples can say it happened June 29th ( that special night at the The Motel6, in East Detroit), we didn't copulate for three months before or after that date, DOC...junior was conceived on 6/29, for sure, 100%.
Question is not really answerable, given normal data.Comment -
Person A asks a non too interesting question
Person B tells him to figure out for himself
Person C says somebody's an idiot
Person D says it all depends on some irrelevant factor
Person E tells you to take the underOriginally posted by pags11Originally posted by BuddyBearOriginally posted by curiousComment -
We have a winner!Originally posted by aguyComment -
u got it a guyComment -
34% is correct.Comment -
Take the under.Comment -
Holy **** if I were the prof I would give you negative marks for this answerOriginally posted by DougComment -
Unreal.Originally posted by DougComment -
Suppose you have $5 and have to spend it on apples and oranges. Oranges cost $1 each and apples cost $2 each. What are all the possible combinations of oranges and apples that you can buy?
Doug's answer:
There is a common misconception that apples and oranges are the only fruits available. Most grocery stores carry bananas and strawberries as well. And not only that, prices will actually vary between stores so if you shop around you could find a good deal and buy many combinations. Also the question should consider whether I am allergic to those fruits.Comment -
Therefore, take the under.Suppose you have $5 and have to spend it on apples and oranges. Oranges cost $1 each and apples cost $2 each. What are all the possible combinations of oranges and apples that you can buy?
Doug's answer:
There is a common misconception that apples and oranges are the only fruits available. Most grocery stores carry bananas and strawberries as well. And not only that, prices will actually vary between stores so if you shop around you could find a good deal and buy many combinations. Also the question should consider whether I am allergic to those fruits.Comment -
Is the 5 dollars in coins or bills? That could be important. Also are they red apples or green apples? Inquiring minds need to know.Originally posted by mathdotcomComment
