Problem: 2012-11-23 at 14:46.png

Attempt: $\displaystyle C^6_1 \cdot 0.05^1 \cdot 0.95^5$

Correct is: 0.2036

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- Nov 23rd 2012, 04:53 AMjacob93Combinations, bad components
Problem: 2012-11-23 at 14:46.png

Attempt: $\displaystyle C^6_1 \cdot 0.05^1 \cdot 0.95^5$

Correct is: 0.2036 - Nov 23rd 2012, 06:15 AMcellaeRe: Combinations, bad components
I honestly can't figure out how they got that answer.

I think your attempt is correct. - Nov 23rd 2012, 08:01 AMPlatoRe: Combinations, bad components
You did not bother to tell witch one you are trying to do.

a) $\displaystyle \binom{6}{0}(.05)^0(.95)^{6-0}$

b) $\displaystyle \binom{6}{1}(.05)^1(.95)^{6-1}$

c) $\displaystyle \sum\limits_{k = 2}^6 {\binom{6}{k}(.05)^k(.95)^{6-k}}$ or

$\displaystyle 1-\left(\binom{6}{0}(.05)^0(.95)^{6-0}+\binom{6}{1}(.05)^1(.95)^{6-1}\right)$ - Nov 23rd 2012, 08:54 AMjacob93Re: Combinations, bad components
Tried b). Thanks both of you, now I know I'm right.

- Nov 26th 2012, 12:12 AMFranciscoOlsenRe: Combinations, bad components
I honestly can't figure out how they got that answer.

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