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Message
re: OT Math problem
Posted on 9/12/17 at 2:58 pm to NYNolaguy1
Posted on 9/12/17 at 2:58 pm to NYNolaguy1
I would say D...99% as the true definition of a 100-year flood is not a flood that will occur every 100 years, but rather a flood that has a 1% chance of occurring in any given year.
0
Posted on 9/12/17 at 2:59 pm to NYNolaguy1
quote:
Civil/Structural
A friend of mine passed, his main study material was the "civil engineering academy" YouTube channel. He swears by it.
Check it out, or don't, I'm not your fricking dad.
Posted on 9/12/17 at 2:59 pm to slackster
quote:
The probability of success is still 1%, not 2%.
The rest of the math is correct, and you'll get .415% chance of 2 100-year floods in a 10 year stretch. The .43% comes form the possibility that there are 2 or more 100 year floods in a 10-year stretch.
Yep! Thanks bud
Posted on 9/12/17 at 3:00 pm to 50_Tiger
quote:
I hate you slack, im reading distributions at work
n = 10
X = 2
45 * p^(x) * q^(n-X)
p(x) is the probability of success = 2% or 0.02 (2/100)
q(x) is the probability of failure = 98% or 0.98 (98/100)
p^(X) = 0.02^2 = 0.0004
q^(n-X) = 0.98^(8) = 0.850
45 * 0.0004 * 0.850 = 0.0153
Edit: im friggin up somewhere.
Posted on 9/12/17 at 3:06 pm to LucasP
quote:
Check it out, or don't, I'm not your fricking dad.
That's what you think.
Posted on 9/12/17 at 3:21 pm to NYNolaguy1
Here's the math, I had to look it up.
where T is the threshold return period (e.g. 100-yr, 50-yr, 25-yr, and so forth), and n is the number of years in the period.
1 - (.99)^100
1-.366
.634
63.4%
where T is the threshold return period (e.g. 100-yr, 50-yr, 25-yr, and so forth), and n is the number of years in the period.
1 - (.99)^100
1-.366
.634
63.4%
Posted on 9/12/17 at 3:33 pm to TigerstuckinMS
(no message)
This post was edited on 3/3/25 at 6:59 am
Posted on 9/12/17 at 3:36 pm to TH03
.99 chance of no flood per year.
.99^100 = chance of no flood per 100 years.
1 - .99^100 = chance of flood in 100 years.
1-.99*100
0.6339676587
(in my desk calc app '*' is exponentiation)
.99^100 = chance of no flood per 100 years.
1 - .99^100 = chance of flood in 100 years.
1-.99*100
0.6339676587
(in my desk calc app '*' is exponentiation)
Posted on 9/12/17 at 3:37 pm to NYNolaguy1
quote:
OT Math problem
quote:
Math
quote:
problem
Posted on 9/12/17 at 3:39 pm to NYNolaguy1
quote:
OT Math problem
That's not a math problem.
Posted on 9/12/17 at 3:42 pm to Kingpenm3
quote:
That's not a math problem.
A word problem?
Posted on 9/12/17 at 3:43 pm to Kingpenm3
Probability is most certainly math...
Posted on 9/12/17 at 3:43 pm to NYNolaguy1
quote:
A word problem?
A first word problem? Those are popular now.
Posted on 9/12/17 at 3:44 pm to NYNolaguy1
quote:
Civil/Structural
I'm taking the PE in October in Civil/Structural as well. What state?
Posted on 9/12/17 at 3:44 pm to NYNolaguy1
1
Posted on 9/12/17 at 3:46 pm to Red5LSU
La
Posted on 9/12/17 at 3:53 pm to NYNolaguy1
Frick you and your dumbass math questions.
Posted on 9/12/17 at 4:19 pm to NYNolaguy1
quote:
La
Me too. Good luck to you.
Posted on 9/12/17 at 4:42 pm to Red5LSU
Y'all are out of your minds. Transportation or bust
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