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PLEASE HELP ME SOLVE THIS PROBLEM I think the table is wrong

PLEASE HELP ME SOLVE THIS PROBLEM I Think The Table Is Wrong class=

Sagot :

Explanation:

The question involves getting the expected value or the sum in a deal involving dice

First, we will have to get the probabilities

Probability is defined by

[tex]P=\frac{number\text{ of possible outcomes}}{number\text{ of total outcome}}[/tex]

If a six is rolled, the probability will be

[tex]P(6)=\frac{1}{6}[/tex]

When a 4 or 5 is rolled, the probability will be

[tex]\begin{gathered} P(4\text{ or 5})=\frac{1}{6}+\frac{1}{6}=\frac{2}{6}=\frac{1}{3} \\ P(4\text{ or 5})=\frac{1}{3} \end{gathered}[/tex]

When a 1, 2, or 3 is rolled

[tex]\begin{gathered} P(1\text{ or 2 or 3})=\frac{1}{6}+\frac{1}{6}+\frac{1}{6}=\frac{3}{6}=\frac{1}{2} \\ P(1\text{ or 2 or 3})=\frac{1}{2} \end{gathered}[/tex]

We can now get the expected pay using the relationship

[tex]Expected\text{ pay =x.P\lparen x\rparen}[/tex]

So for rolling a 6, the expected will be

[tex]x.P(x)=\text{ \$}12\times\frac{1}{6}=\text{ \$2}[/tex]

When a 4 or 5 is rolled

[tex]x.P(x)=\text{ \$}6\times\frac{1}{3}=\text{ \$2}[/tex]

When 1,2, or 3 are rolled

[tex]x.P(x)=-\text{ \$}5\times\frac{1}{2}=-\text{ \$2.5}[/tex]

We can now construct the table as follow

View image TaetumW37125
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