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expeople1 [14]
3 years ago
7

The following represents the probability distribution for the daily demand of microcomputers at a local store. Demand Probabilit

y 0 .1 1 .2 2 .3 3 .2 4 .2 The expected daily demand is _____.
Mathematics
1 answer:
konstantin123 [22]3 years ago
8 0

Answer:

The correct answer is 2.2.

Step-by-step explanation:

The following represents the probability distribution for the daily demand of microcomputers at a local store:

Demand Probability

f(0)= .1

f(1)= .2

f(2)= .3

f(3)= .2

f(4)= .2.

Expectation of a discrete probability function f of the random variable x is given by ∑ x × f(x).

Thus the expected value of  demand is given by

0.1 × 0 + 0.2 × 1 + 0.3 × 2 + 0.2 × 3 + 0.2 × 4 = 2.2.

The expected daily demand is 2.2.

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