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Vitek1552 [10]
1 year ago
10

find the exepted value of the random varible with the following probability distribution x=2,3,4,5,6,7,8,9,10,11,12 Probability

=1/36,1/18,1/12,1/9,5/36,1/6,5/36,1/9,1/12,1/18,1/36
Mathematics
1 answer:
dem82 [27]1 year ago
6 0

The expected value of the random variable is 7

<h3>How to determine the expected value of the random variable?</h3>

The probability distribution is given as:

x=2,3,4,5,6,7,8,9,10,11,12

Probability =1/36,1/18,1/12,1/9,5/36,1/6,5/36,1/9,1/12,1/18,1/36

The expected value of the random variable is calculated using

E(X) = ∑xP(x)

Using the above formula, we have

E(x) = 2 * 1/36 + 3 * 1/18 + 4 * 1/12 + 5 * 1/9+ 6 * 5/36 + 7 * 1/6 + 8 * 5/36 + 9 * 1/9 + 10 * 1/12 + 11 * 1/18+ 12 * 1/36

Evaluate the sum of products

E(x) = 7

Hence, the expected value of the random variable is 7

Read more about expected value at

brainly.com/question/15858152

#SPJ1

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devlian [24]

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7 0
2 years ago
the cost for a company to produce x television in 1 year is $150x + $250,000. how many televisions can the company produce in 1
vampirchik [111]

Answer:

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Step-by-step explanation:

Given:

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$150x + $250,000 = $550,000

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5 0
3 years ago
What percent of increase for a population that changed from 25,000 to 30,000
tiny-mole [99]

percent of increase for a population that changed from 25,000 to 30,000

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So, the increase in population is 5000

To find percent of increase , we divide the increase in population by initial population.

So percent of increase = \frac{5000}{25000} * 100

= 0.2 * 100

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20% of increase for a population that changed from 25,000 to 30,000.

7 0
3 years ago
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7/9+7/54 what is the answer
kolbaska11 [484]

Answer:

49/54

Step-by-step explanation:

7/9 + 7/54

42/54 + 7/54

49/54

3 0
3 years ago
HELP I NEED THIS ANSWER
Sedbober [7]

Answer:

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Step-by-step explanation:

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