The manager of a stockroom in a factory knows from her study of record that x, the daily demand ( number of times used per day) for a certain tool, has the following probability distributions Demand 1 2 Probability 0.2 0.6 0.5 That is, 50% of the daily records show that the total was used one time. Find the expected daily demand for the tool and the variance.
The manager of a stockroom in a factory knows from her study of record that x, the daily demand ( number of times used per day) for a certain tool, has the following probability distributions Demand 1 2 Probability 0.2 0.6 0.5 That is, 50% of the daily records show that the total was used one time. Find the expected daily demand for the tool and the variance.
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Transcribed Image Text:2. The manager of a stockroom in a factory knows from her study of record that x, the daily
demand ( number of times used per day) for a certain tool, has the following probability
distributions
Demand
1
2
Probability
0.2
0.6
0.5
That is, 50% of the daily records show that the total was used one time. Find the
expected daily demand for the tool and the variance.
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