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aev [14]
4 years ago
14

What is the expected value of X?

Mathematics
2 answers:
Soloha48 [4]4 years ago
7 0

Answer:

5.6

Step-by-step explanation:

fr fr

Luda [366]4 years ago
6 0

Answer:

6.2

Step-by-step explanation:

The expected value is the sum of the each value times its probability.

X = (3×0.2) + (4×0.1) + (5×0.25) + (7×0.05) + (9×0.4)

X = 0.6 + 0.4 + 1.25 + 0.35 + 3.6

X = 6.2

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