How to use probability density function on this given scenario? [closed]











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An officer is always late to the office and arrives within the grace period of ten minutes after the start. Let X b the time that elapses between the start and the time the officer signs in with a probability density function.



$$f(x)=begin{cases} kx^2&:& 0leqslant xleqslant 10\0 &:& text{otherwise}end{cases}$$



where k > 0 is a constant.




  1. Compute the value of K.


  2. Find the probability that the he arrives less than 3 minutes after the start of the office.











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closed as off-topic by Graham Kemp, user302797, KReiser, max_zorn, Brahadeesh Nov 23 at 6:37


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – Graham Kemp, user302797, KReiser, max_zorn, Brahadeesh

If this question can be reworded to fit the rules in the help center, please edit the question.

















    up vote
    -2
    down vote

    favorite












    An officer is always late to the office and arrives within the grace period of ten minutes after the start. Let X b the time that elapses between the start and the time the officer signs in with a probability density function.



    $$f(x)=begin{cases} kx^2&:& 0leqslant xleqslant 10\0 &:& text{otherwise}end{cases}$$



    where k > 0 is a constant.




    1. Compute the value of K.


    2. Find the probability that the he arrives less than 3 minutes after the start of the office.











    share|cite|improve this question















    closed as off-topic by Graham Kemp, user302797, KReiser, max_zorn, Brahadeesh Nov 23 at 6:37


    This question appears to be off-topic. The users who voted to close gave this specific reason:


    • "This question is missing context or other details: Please improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – Graham Kemp, user302797, KReiser, max_zorn, Brahadeesh

    If this question can be reworded to fit the rules in the help center, please edit the question.















      up vote
      -2
      down vote

      favorite









      up vote
      -2
      down vote

      favorite











      An officer is always late to the office and arrives within the grace period of ten minutes after the start. Let X b the time that elapses between the start and the time the officer signs in with a probability density function.



      $$f(x)=begin{cases} kx^2&:& 0leqslant xleqslant 10\0 &:& text{otherwise}end{cases}$$



      where k > 0 is a constant.




      1. Compute the value of K.


      2. Find the probability that the he arrives less than 3 minutes after the start of the office.











      share|cite|improve this question















      An officer is always late to the office and arrives within the grace period of ten minutes after the start. Let X b the time that elapses between the start and the time the officer signs in with a probability density function.



      $$f(x)=begin{cases} kx^2&:& 0leqslant xleqslant 10\0 &:& text{otherwise}end{cases}$$



      where k > 0 is a constant.




      1. Compute the value of K.


      2. Find the probability that the he arrives less than 3 minutes after the start of the office.








      probability density-function






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      edited Nov 22 at 23:03









      Graham Kemp

      84.7k43378




      84.7k43378










      asked Nov 22 at 19:22









      Dilanka Dias

      61




      61




      closed as off-topic by Graham Kemp, user302797, KReiser, max_zorn, Brahadeesh Nov 23 at 6:37


      This question appears to be off-topic. The users who voted to close gave this specific reason:


      • "This question is missing context or other details: Please improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – Graham Kemp, user302797, KReiser, max_zorn, Brahadeesh

      If this question can be reworded to fit the rules in the help center, please edit the question.




      closed as off-topic by Graham Kemp, user302797, KReiser, max_zorn, Brahadeesh Nov 23 at 6:37


      This question appears to be off-topic. The users who voted to close gave this specific reason:


      • "This question is missing context or other details: Please improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – Graham Kemp, user302797, KReiser, max_zorn, Brahadeesh

      If this question can be reworded to fit the rules in the help center, please edit the question.






















          1 Answer
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          up vote
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          Straightforward enough.
          $1 = kint_0^{10}x^2dx$. You should be able to solve for k knowing this. The second part is the value of $kint_0^{3}x^2dx$ using $k$ from the first part.






          share|cite|improve this answer




























            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes








            up vote
            2
            down vote













            Straightforward enough.
            $1 = kint_0^{10}x^2dx$. You should be able to solve for k knowing this. The second part is the value of $kint_0^{3}x^2dx$ using $k$ from the first part.






            share|cite|improve this answer

























              up vote
              2
              down vote













              Straightforward enough.
              $1 = kint_0^{10}x^2dx$. You should be able to solve for k knowing this. The second part is the value of $kint_0^{3}x^2dx$ using $k$ from the first part.






              share|cite|improve this answer























                up vote
                2
                down vote










                up vote
                2
                down vote









                Straightforward enough.
                $1 = kint_0^{10}x^2dx$. You should be able to solve for k knowing this. The second part is the value of $kint_0^{3}x^2dx$ using $k$ from the first part.






                share|cite|improve this answer












                Straightforward enough.
                $1 = kint_0^{10}x^2dx$. You should be able to solve for k knowing this. The second part is the value of $kint_0^{3}x^2dx$ using $k$ from the first part.







                share|cite|improve this answer












                share|cite|improve this answer



                share|cite|improve this answer










                answered Nov 22 at 19:33









                Hongyu Wang

                26117




                26117















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