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Math 6010 • Linear Models

Summer 2020 • Question 2

Let \(X,Y\) be independent random variables with respective densities \[ f(t)= \begin {cases} 0, & \text {if } t\notin [-2,3],\\ \dfrac {1}{5}, & \text {if } t\in [-2,3], \end {cases} \] and \[ g(t)= \begin {cases} 0, & \text {if } t\notin [-1,5],\\ \dfrac {1}{6}, & \text {if } t\in [-1,5]. \end {cases} \] Compute the density of \(X+Y\).

Raw LaTeX

Let \(X,Y\) be independent random variables with respective densities
\[
  f(t)=
  \begin{cases}
    0, & \text{if } t\notin[-2,3],\\
    \dfrac{1}{5}, & \text{if } t\in[-2,3],
  \end{cases}
\]
and
\[
  g(t)=
  \begin{cases}
    0, & \text{if } t\notin[-1,5],\\
    \dfrac{1}{6}, & \text{if } t\in[-1,5].
  \end{cases}
\]
Compute the density of \(X+Y\).