The discussion revolves around a probability distribution question, specifically focusing on the interpretation and derivation of a particular line in a solution involving a calculation related to the mean and variance.
The discussion is ongoing, with participants actively seeking clarification on the steps taken in the solution. Some guidance has been provided regarding the application of standard inequalities, but no consensus has been reached on the interpretation of the problem.
Participants are reminded of forum rules requiring them to show their work, which may be influencing the depth of the discussion and the types of questions being asked.
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?
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.
They're applying a standard inequality. What inequalities do you know which involve the mean and variance?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)