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andrew11 [14]
2 years ago
12

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.
Mathematics
1 answer:
Charra [1.4K]2 years ago
6 0

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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