Probability distribution question

AI Thread Summary
The discussion centers around understanding a specific probability distribution problem, particularly the derivation of the expression 1 - 6.25/10^2. Participants express confusion about the method used to simplify the problem to P((X-u)<10) and seek clarification on the application of standard inequalities related to mean and variance. The conversation emphasizes the importance of showing work in problem-solving and understanding the underlying principles. There is a call for more detailed explanations to aid comprehension of the solution process. Overall, the thread highlights the need for clarity in probability concepts and problem-solving techniques.
princejan7
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Homework Statement



http://postimg.org/image/bleosmrep/

Homework Equations





The Attempt at a Solution



can someone explain the last line of the solution; where did 1 - 6.25/10^2 come from?
 
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princejan7 said:

Homework Statement



http://postimg.org/image/bleosmrep/

Homework Equations





The Attempt at a Solution



can someone explain the last line of the solution; where did 1 - 6.25/10^2 come from?

You are supposed to show your work (PF rules). So, first you need to tell us what you think the method is.
 
Ray Vickson said:
You are supposed to show your work (PF rules). So, first you need to tell us what you think the method is.

I'm not really sure what they're doing at all
I want to know why they reduced the original problem to P((X-u)<10)
 
princejan7 said:
I'm not really sure what they're doing at all
I want to know why they reduced the original problem to P((X-u)<10)
They're applying a standard inequality. What inequalities do you know which involve the mean and variance?
 
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