Solved

Probability of getting pregnant

Posted on 2014-04-01
8
362 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
Gigs: Get Your Project Delivered by an Expert

Select from freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely and get projects done right.

 
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
 
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

Courses: Start Training Online With Pros, Today

Brush up on the basics or master the advanced techniques required to earn essential industry certifications, with Courses. Enroll in a course and start learning today. Training topics range from Android App Dev to the Xen Virtualization Platform.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Baseline sigma 8 35
springs 17 45
Probability Distribution 2 66
My 2003 Land Rover discovery 2 key for code for car alarm 7 122
How to Win a Jar of Candy Corn: A Scientific Approach! I love mathematics. If you love mathematics also, you may enjoy this tip on how to use math to win your own jar of candy corn and to impress your friends. As I said, I love math, but I gu…
Have you ever thought of installing a power system that generates solar electricity to power your house? Some may say yes, while others may tell me no. But have you noticed that people around you are now considering installing such systems in their …
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

776 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