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Mathematics 9 Online
OpenStudy (anonymous):

Statistic and probability problem:

OpenStudy (anonymous):

\[P(|X-\mu x|<\sigma)\ge1 - \frac{ 1 }{ k^2 }\] for any Real number k not equal to 0, and any random variable. also gives useful information only for k>1

OpenStudy (dan815):

is big X the mean

OpenStudy (dan815):

what is u, is the sigma the deviation?

OpenStudy (anonymous):

u is sigma and X is capital

OpenStudy (anonymous):

sorry is u is mean and sigma is o

OpenStudy (anonymous):

mu* u

OpenStudy (dan815):

hmm im looking i was solving this chebyshev polynomials in the sturm louiville problems section, what does that have to do with this

OpenStudy (anonymous):

??

OpenStudy (dan815):

i think u shud just use the zscore stuff

OpenStudy (dan815):

or that gaussian prob function

OpenStudy (anonymous):

i know that the z score need a table

OpenStudy (dan815):

http://prntscr.com/5h06w6

OpenStudy (dan815):

that makes sense

OpenStudy (anonymous):

red mark on the P(X- mu x)?

OpenStudy (dan815):

lets do parts till we figure out what hte rest of the stuff is saying... P(X-ux)=?

OpenStudy (anonymous):

P(X- mux < sigma ) = 68% empircal rule

OpenStudy (anonymous):

P(X- mux < 2sigma ) =95%

OpenStudy (dan815):

oh ok

OpenStudy (anonymous):

P(X- mux < 3sigma ) = 99%

OpenStudy (dan815):

can i use the gaussian formula then

OpenStudy (anonymous):

k i see

OpenStudy (dan815):

|dw:1418626423822:dw| http://prntscr.com/5h06w6

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