Probability distribution and finding the median

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SUMMARY

The discussion focuses on calculating the median of a probability distribution defined by the density function f(x) = (x^3)/4 for 0 < x < 2. The integral of this function must equal 1/2 to find the median. Participants clarified that the integral does converge, as f(x) is zero outside the interval [0, 2]. The key takeaway is that understanding the limits of integration is crucial for solving the problem accurately.

PREREQUISITES
  • Understanding of probability density functions
  • Knowledge of integration techniques
  • Familiarity with the concept of median in statistics
  • Basic calculus, specifically dealing with definite integrals
NEXT STEPS
  • Study the properties of probability density functions
  • Learn how to compute integrals of polynomial functions
  • Explore the concept of convergence in integrals
  • Review statistical measures, particularly median and mean
USEFUL FOR

Students studying statistics, mathematics educators, and anyone interested in understanding probability distributions and their properties.

Painguy
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Homework Statement


Suppose that x measures the time (in hours) it takes for students to complete an exam. All students are done within 2 hours and the density function for x is given by

f(x)={(x^3)/4 0<x<2
{0 otherwise

Compute the median of this distribution. (Give an exact answer.)


Homework Equations



int f(x)dx from m to inf =1/2

The Attempt at a Solution



I'm not sure what m is supposed to be, and because of that I'm completely lost. It looks like the integral doesn't even converge. How do I go about this problem?
 
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Painguy said:

Homework Statement


Suppose that x measures the time (in hours) it takes for students to complete an exam. All students are done within 2 hours and the density function for x is given by

f(x)={(x^3)/4 0<x<2
{0 otherwise

Compute the median of this distribution. (Give an exact answer.)

Homework Equations



int f(x)dx from m to inf =1/2

The Attempt at a Solution



I'm not sure what m is supposed to be, and because of that I'm completely lost. It looks like the integral doesn't even converge. How do I go about this problem?

Yes, it does converge. f(x)=0 for x>2 and x<0. You aren't really integrating to infinity. Now get started.
 

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