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seen Oct 23 '12 at 11:28

Jan
26
awarded  Popular Question
Oct
23
awarded  Editor
Oct
23
revised Find a constant in a density function
typo mistake
Oct
23
suggested suggested edit on Find a constant in a density function
Oct
23
comment How to calculate MEAN of exponential distribution?
Why it's not $E[(X+5)^2]=E[X^2]+10E[X]+E[5^2]$ but $+5$?
Oct
23
comment How to calculate MEAN of exponential distribution?
Why it's not $E[(X+5)^2]=E[X^2]+10E[X]+E[5^2]$ but $+2E[X]$?
Oct
23
comment How to calculate MEAN of exponential distribution?
Sorry. Can you show the steps why $E[(X+5)^2]=E[X^2]+2E[X]+E[5^2]$?
Oct
22
comment How to calculate MEAN of exponential distribution?
Can you explain a little bit more on $E((X+5)2)=E(X2)+10E(X)+5$? I'm quite confused.
Oct
22
accepted How to calculate MEAN of exponential distribution?
Oct
22
awarded  Scholar
Oct
22
comment How to calculate MEAN of exponential distribution?
Is $E[X] = \frac1\lambda $? Then $E[X] = 5$. Can we use the similar method to find out $E[(x+5)^2]$ ?
Oct
22
comment How to calculate MEAN of exponential distribution?
I know $E[X]$ = 5 but I've no idea about $E[(X+5)^2]$
Oct
22
comment How to calculate MEAN of exponential distribution?
I know $E[X]$ means the mean/expected value of $f(x)$
Oct
22
revised How to calculate MEAN of exponential distribution?
edited tags
Oct
22
asked How to calculate MEAN of exponential distribution?