A spinner contains four sections: red, blue, green, and yellow. Joaquin spins the spinner twice. The set of outcomes is given as [tex]$S=\{R B, R G, R Y, R R, B R, B G, B Y, B B, G R, G B, G Y, G G, Y R, Y B, Y G, Y Y\}$[/tex].

If the random variable is yellow [tex]$(Y)$[/tex], which of the following is the correct probability distribution?

\begin{tabular}{|c|c|}
\hline
Yellow: [tex]$X$[/tex] & Probability: [tex]$P_x(x)$[/tex] \\
\hline
0 & 0.5625 \\
\hline
1 & 0.375 \\
\hline
2 & 0.0625 \\
\hline
\end{tabular}

\begin{tabular}{|c|c|}
\hline
Yellow: [tex]$X$[/tex] & Probability: [tex]$P_{N}(x)$[/tex] \\
\hline
0 & 0.75 \\
\hline
1 & 0.25 \\
\hline
2 & 0 \\
\hline
\end{tabular}

\begin{tabular}{|c|c|}
\hline
Yellow: [tex]$X$[/tex] & Probability: [tex]$P_{x}(x)$[/tex] \\
\hline
0 & 0.5 \\
\hline
1 & 0.375 \\
\hline
2 & 0.125 \\
\hline
\end{tabular}

\begin{tabular}{|c|c|}
\hline
Yellow: [tex]$X$[/tex] & Probability: [tex]$P_x(x)$[/tex] \\
\hline
\end{tabular}



Answer :

To solve this problem, let's find the correct probability distribution for the number of times yellow appears (denoted as [tex]\(X\)[/tex]) when the spinner is spun twice.

The set of outcomes for two spins is given:
[tex]\[ S = \{ RB, RG, RY, RR, BR, BG, BY, BB, GR, GB, GY, GG, YR, YB, YG, YY \} \][/tex]

There are 16 possible outcomes. We need to determine the probabilities for the following cases:

1. [tex]\(X = 0\)[/tex]: Zero yellow sections
2. [tex]\(X = 1\)[/tex]: One yellow section
3. [tex]\(X = 2\)[/tex]: Two yellow sections

### Step-by-Step Breakdown

1. Calculate the number of outcomes with zero yellow sections ([tex]\(X=0\)[/tex]):
- Outcomes without any 'Y': \{RR, RB, RG, BR, BB, BG, GR, GB, GG\}
- There are 9 outcomes that do not contain yellow.

2. Calculate the number of outcomes with one yellow section ([tex]\(X=1\)[/tex]):
- Outcomes with exactly one 'Y': \{RY, BY, GY, YR, YB, YG\}
- There are 6 outcomes that contain exactly one yellow.

3. Calculate the number of outcomes with two yellow sections ([tex]\(X=2\)[/tex]):
- Outcomes with exactly two 'Y's: \{YY\}
- There is 1 outcome that contains exactly two yellows.

The total number of outcomes is 16. Hence, the probabilities are:
- [tex]\( P(X=0) = \frac{9}{16} = 0.5625 \)[/tex]
- [tex]\( P(X=1) = \frac{6}{16} = 0.375 \)[/tex]
- [tex]\( P(X=2) = \frac{1}{16} = 0.0625 \)[/tex]

### Construct the Probability Distribution Table

Based on our calculations, the correct probability distribution for the number of yellows (X) is:

[tex]\[ \begin{tabular}{|c|c|} \hline Yellow: $X$ & Probability: $P_X(x)$ \\ \hline 0 & 0.5625 \\ \hline 1 & 0.375 \\ \hline 2 & 0.0625 \\ \hline \end{tabular} \][/tex]

Thus, the first table is the correct probability distribution.