Solved

Probability of getting pregnant

Posted on 2014-04-01
8
325 Views
Last Modified: 2014-04-02
OK, this is a math probability question.

We had a safety meeting this morning where a gentlemen said that he is having his third grandson after his son had a vasectomy and his son's wife had her tubes tied. A quick search says that 1/100 vasectomies will fail and 5/1000 Tubal Ligations will fail.

The question is, how do you combine the probabilites. An explanation would be awesome because I am deemed with coming up with an answer and explanation. Great...
0
Comment
Question by:wrt1mea
8 Comments
 
LVL 8

Assisted Solution

by:5teveo
5teveo earned 167 total points
ID: 39970398
independent events

1 dice toss has a 1 in 6 chance of showing 1 dot 1/6

tossing 2 dice...  both resulting in 1 is 1/6 * 1/6 or 1/36 - one out of 36 throws on average...

So 1/100 * 5/1000 would be 5/100000 or 5 out of every 100000 situations where both scenarios exists... Vas and tubes tied as couple exists.

That's my take...
0
 
LVL 34

Expert Comment

by:Dan Craciun
ID: 39970399
If every couple who can conceive will conceive, then the probability would be 1/100 * 1/200, or .005%.
But that is only if the vasectomy and ligation are the only factors that would prevent conception.
0
 
LVL 24

Accepted Solution

by:
aadih earned 167 total points
ID: 39970411
The Probability of a failed vasectomy is 0.01.

The probability of a failed tubal ligations is: 0.005.

The combined probability of the two events together is found by multiplying the two individual probabilities.

Therefor the combined probability is: 0.01 x 0.005 =  0.00005.

[Reference (for understanding):

 < http://www.ehow.com/how_8109505_combine-probability-two-events.html >]
0
 
LVL 38

Assisted Solution

by:lherrou
lherrou earned 166 total points
ID: 39970863
Ah, but don't forget that only 90% of couples (fertile and having regular intercourse) will be expecting a child after a year without contraception - so 0.00005 x .9 = .000045
0
Highfive + Dolby Voice = No More Audio Complaints!

Poor audio quality is one of the top reasons people don’t use video conferencing. Get the crispest, clearest audio powered by Dolby Voice in every meeting. Highfive and Dolby Voice deliver the best video conferencing and audio experience for every meeting and every room.

 
LVL 34

Expert Comment

by:Dan Craciun
ID: 39973159
You do realize that .005% means 5 in 100000, or 0.00005, don't you? :)
0
 
LVL 1

Author Comment

by:wrt1mea
ID: 39973191
Looked right over the %....crap Dan. I apologize.
0
 
LVL 1

Author Comment

by:wrt1mea
ID: 39973194
Want me to get a mod to reopen?
0
 
LVL 34

Expert Comment

by:Dan Craciun
ID: 39973202
Nah, it's OK. I'll be more careful next time to skip the percentages :)
0

Featured Post

What Security Threats Are You Missing?

Enhance your security with threat intelligence from the web. Get trending threat insights on hackers, exploits, and suspicious IP addresses delivered to your inbox with our free Cyber Daily.

Join & Write a Comment

This article seeks to propel the full implementation of geothermal power plants in Mexico as a renewable energy source.
Article by: Nicole
This is a research brief on the potential colonization of humans on Mars.
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…
You have products, that come in variants and want to set different prices for them? Watch this micro tutorial that describes how to configure prices for Magento super attributes. Assigning simple products to configurable: We assigned simple products…

708 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now