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Sagot :
Let's analyze the given data carefully to determine the probability of earning a score of 3 or higher on the standardized test.
The provided table shows the scores and their corresponding probabilities:
[tex]\[ \begin{array}{|c|c|} \hline \text{Score} & \text{Probability} \\ \hline 1 & 0.18 \\ 2 & 0.20 \\ 3 & 0.26 \\ 4 & 0.21 \\ 5 & 0.15 \\ \hline \end{array} \][/tex]
We need to find the probability of earning a score of 3 or higher. This means we need to consider the scores 3, 4, and 5.
To solve this, we add the probabilities of these scores:
[tex]\[ \begin{aligned} \text{Probability of scoring 3} &= 0.26 \\ \text{Probability of scoring 4} &= 0.21 \\ \text{Probability of scoring 5} &= 0.15 \\ \end{aligned} \][/tex]
Next, we sum these probabilities:
[tex]\[ 0.26 + 0.21 + 0.15 = 0.62 \][/tex]
Therefore, the probability of earning a score of 3 or higher is [tex]\(0.62\)[/tex].
The correct answer is: 0.62
The provided table shows the scores and their corresponding probabilities:
[tex]\[ \begin{array}{|c|c|} \hline \text{Score} & \text{Probability} \\ \hline 1 & 0.18 \\ 2 & 0.20 \\ 3 & 0.26 \\ 4 & 0.21 \\ 5 & 0.15 \\ \hline \end{array} \][/tex]
We need to find the probability of earning a score of 3 or higher. This means we need to consider the scores 3, 4, and 5.
To solve this, we add the probabilities of these scores:
[tex]\[ \begin{aligned} \text{Probability of scoring 3} &= 0.26 \\ \text{Probability of scoring 4} &= 0.21 \\ \text{Probability of scoring 5} &= 0.15 \\ \end{aligned} \][/tex]
Next, we sum these probabilities:
[tex]\[ 0.26 + 0.21 + 0.15 = 0.62 \][/tex]
Therefore, the probability of earning a score of 3 or higher is [tex]\(0.62\)[/tex].
The correct answer is: 0.62
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