The number of envelops, n=6.
The expectation value can be obtained as,
[tex]\begin{gathered} E=\frac{64+226+280+400+514+1095}{6} \\ =\frac{2579}{6} \\ \approx429.83 \end{gathered}[/tex]Therefore, a person's expectation is to get approximately $429.83 from the envelope.
