Define a random variable x = number of cups of coffee consumed on an average day. Let x = 4 represent four or more cups. Round y
our answers to four decimal places.
1 answer:
Answer:
<em>E (X) = 6.4</em>
Step-by-step explanation:
SOLUTION:
A random variable x = number of cups of coffee consumed on an average day.
∴Let x = 4 represent four or more cups. Round your answers to four decimal places.
X Probability (X)
0 0.1
1 0.15
2 0.3
3 0.75
4 0. 25
5 0.21
∴ E (X) = Ux(Mean)
0x.0.1 + 1 x.15 + 2 x 0.3 + 3 x 0.75 + 4 x 0.25 + 5 x 0.21 = <em>6.4</em>
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