Question

For the given data compute the expected value.

Answer 1

doc files dont work right on all computers :/

Answer 2

multiply payoof by probability; and add them up then divide by how many there are to get the "mean"

Answer 3

my ti83 pops out a mean (expected value) of 3.5 if its done right

Answer 4

yup thats what i got too!!!

Answer 5

\[\begin{array}{c|c}x & 8&9&-3&0 \\\hline p & .19&.23&.35&.23\end{array}\]

expected value

\[=8\cdot.19+9\cdot.23+(-3)\cdot.35+0\cdot.23=2.54\]

Answer 6

the expected value of a discrete random variable is given by

\[E[X]=\sum_{x\in \Omega}xP(X=x)\]