statistics question...uploaded photo in comments..please helpp!

Question

anonymous · Answer

attachment

amistre64 · Answer

looks like an exponential distribution ....

amistre64 · Answer

$$\int_{1}^{inf}\theta x^{-(\theta+1)}dx=1$$

amistre64 · Answer

if im reading it right, the only variable is x, so this is just a power rule
$$\int_{1}^{inf}\theta x^{-(\theta+1)}dx=1$$
$$1=\frac{\theta x^{-(\theta+1)+1}}{-(\theta+1)+1}~:~[1,inf)$$

amistre64 · Answer

prolly not reading it right tho .....

anonymous · Answer

I feel like it's a bit more complicated then that but I really have no idea

amistre64 · Answer

im sure it is a bit more complicated ... what does the theta represent?  an angle or just a general unknown?

anonymous · Answer

General unknown

amistre64 · Answer

$$lnX_1+lnX_2+lnX_3+...+lnX_n=ln(X_1~X_2~X_3~...~X_n)$$
what does a product of the sample (space?) tells us?

anonymous · Answer

Not sure

amistre64 · Answer

me either :/ .... and i have class starting soon.  Ill check this out later to see if i can make heads or tails of it :)  with any luck someone else who knows what they are doing will come along and give us some insights

amistre64 · Answer

http://math.arizona.edu/~jwatkins/N_unbiased.pdf this might be some of my reading material later

anonymous · Answer

Ok thank you!