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Ms. Mills reported her students' scores on the most recent quiz. Score Number of students 82 2 84 5 99 3 X is the score that a randomly chosen student scored. What is the expected value of X? Write your answer as a decimal.

Ms Mills reported her students scores on the most recent quiz Score Number of students 82 2 84 5 99 3 X is the score that a randomly chosen student scored What class=

Respuesta :

In order to calculate the expected value of x, we can add the score of all students and divide by the number of students. So we have:

[tex]\begin{gathered} E(x)=\frac{82\cdot2+84\cdot5+99\cdot3}{10} \\ E(x)=88.1 \end{gathered}[/tex]

So the expected value of x is 88.1.

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