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Hey cansome one explain me what this rule of occurence of the disease means?
I was thinkings its given in the Q...sensitivity=95%
But why r u considering 'NOT detecting the disease = 0.95 or 95%'
I didnt get...and kind of lost with ur explanation also adrenaline...guess my brain stopped...to think
Sorry...
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Yeah do...I wanted to add that A cannot be equal to B if the brackets are applied elsewhere.
(1-0.05)* 8 = 0.95*8 =! 1-(0.05*8) (=! not equal to)
Now..for a qucik math thing.... factorials
5! = 5x4x3x2x1 and 3! = 3x2x1
so 5C3 = 5!/3!*2! = 5x4x3!/(3!x2) = 5x4/2 = 10
Why is the above formula useful?..well if the q asks u..whats the probability that 3 individuals have a positive result?
P(X=3) = 8!/3!5! * 0.05^3 * 0.95^5
= (8x7x6x5!/ 3x2 * 5!) * 0.05^3 *0.95^5
= 56* 0.05^3 *0.95^5
Good luck,
Posts: 3,675,937
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Yeah do...I wanted to add that A cannot be equal to B if the brackets are applied elsewhere.
(1-0.05)* 8 = 0.95*8 =! 1-(0.05*8) (=! not equal to)
Now..for a qucik math thing.... factorials
5! = 5x4x3x2x1 and 3! = 3x2x1
so 5C3 = 5!/3!*2! = 5x4x3!/(3!x2) = 5x4/2 = 10
Why is the above formula useful?..well if the q asks u..whats the probability that 3 individuals have a positive result?
P(X=3) = 8!/3!5! * 0.05^3 * 0.95^5
= (8x7x6x5!/ 3x2 * 5!) * 0.05^3 *0.95^5
= 56* 0.05^3 *0.95^5
Good luck,
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ohh ur doing the joint probability thing... first of all the explanation and the formula went jara bumper! but will work on it...its sowly sinkin in... thank u!
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ohh ur doing the joint probability thing... first of all the explanation and the formula went jara bumper! but will work on it...its sowly sinkin in... thank u!
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Hey Nautilius...its "Rule out"...not rule of. I corrected that mistake in doctoria's post. Sorry for the misunderstanding.
Doctoria -I have a silly Q ..."rule of"... is that "rule out", Adrenaline ?
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Hey Nautilius...its "Rule out"...not rule of. I corrected that mistake in doctoria's post. Sorry for the misunderstanding.
Doctoria -I have a silly Q ..."rule of"... is that "rule out", Adrenaline ?