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Chloe counted the number of silver beads on each bracelet at Rockport Jewelry, the store where she works. Number of silver beads Number of bracelets O 3 4 15 2 35 2 36 1 56 3 86 5 X is the number of silver beads that a randomly chosen bracelet had. What is the expected va Write your answer as a decimal.

Respuesta :

Calculate the average of the number of silver beads weighted by the number of bracelets to find the expected value of x:

[tex]\begin{gathered} x=\frac{3\cdot0+4\cdot6+2\cdot15+2\cdot35+1\cdot36+3\cdot56+5\cdot86}{3+4+2+2+1+3+5} \\ =\frac{758}{20} \\ =37.9 \end{gathered}[/tex]

Therefore, the expected value of x is:

[tex]37.9[/tex]

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