Some questions about random variables probability

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Discussion Overview

The discussion revolves around questions related to random variables and probability, specifically focusing on two problems presented by a participant in preparation for an upcoming quiz. The scope includes conceptual understanding and problem-solving related to probability theory.

Discussion Character

  • Homework-related
  • Conceptual clarification

Main Points Raised

  • A participant expresses difficulty in solving the first of two probability questions and seeks assistance from the forum.
  • Another participant encourages the original poster to share their thought process and working out to facilitate better assistance.
  • The original poster mentions finding a solution for the second question but remains uncertain about the first question, emphasizing the urgency due to an impending quiz.
  • A hint is provided regarding the first question, asking about the definition of probability over an interval for a bivariate function and the limits of the integral involved.
  • The original poster later reports finding the solution from friends, indicating a resolution to their query.

Areas of Agreement / Disagreement

The discussion does not present any consensus, as the original poster initially sought help but later found a solution independently. There are no competing views or unresolved disagreements noted in the thread.

Contextual Notes

The original poster's understanding and approach to the first question remain unclear, as they did not provide their working out or specific thoughts on the problem before finding a solution elsewhere.

yousif1429
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I have some questions I could not find answer I hope here to get the correct answer

my questions here in this picture ( attached ) 2 questions
 

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Hey yousif1429 and welcome to the forums.

It would help us if you showed your working out and also told us what you are thinking and why you are thinking that.

We can't just solve things for you on these forums per the forum rules, so to help the readers we need to know some of these details.
 
ok i found solutions for second question but the first one i did not found yet
the purpose of these questions because tomorrow i have quiz and my teacher bring this question in last semester and i said for my self may he will repeat it again
please if you know solve the first one please because i looked in my book similar to this question and i did not find i get tired now and my exam is tomorrow i hope some one help me .

thank you ,
 
yousif1429 said:
ok i found solutions for second question but the first one i did not found yet
the purpose of these questions because tomorrow i have quiz and my teacher bring this question in last semester and i said for my self may he will repeat it again
please if you know solve the first one please because i looked in my book similar to this question and i did not find i get tired now and my exam is tomorrow i hope some one help me .

thank you ,

Hint for the number 1: What is the definition of the probability over an interval for a bivariate function? What are the limits for this integral given the information in the question?
 
ok no thank you i found the solution from my friends
 

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