Solving Random Variable x | Maria Seeking Help

maria69 · Nov 26, 2009

Hi if someone can please help me to this question? PLease?
Thank you
maria
http://img21.imageshack.us/img21/9793/statistikh4.jpg

mathman · Nov 26, 2009

Please define S!

maria69 · Nov 30, 2009

Sorry i forgot to mention what S is. Here:
http://img682.imageshack.us/img682/3866/question4.jpg
i have done part (i) but i can't do part (ii)
Can you please help??
Thank you
Maria

mathman · Nov 30, 2009

V(S)=E(S²)-E(S)²
E(S²)=σ²
V(S) must be > 0, otherwise S would not be random.
Therefore E(S) must be < σ.

Solving Random Variable x | Maria Seeking Help

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