What is the mean of 20, 37, 43, 54, 83, 102, 117, 160, 208?

Mathematics

1 answer:

Alekssandra [29.7K]3 years ago

6 0

Answer is 91.56 You add all the numbers up and divide by 9(There are 9 numbers in the sequence).

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Answer:

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$E(X)=\sum_{i=1}^n X_i P(X_i)$

And if we use the values obtained we got:

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Step-by-step explanation:

Let X the random variable that represent the number of admisions at the universit, and we have this probability distribution given:

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In statistics and probability analysis, the expected value "is calculated by multiplying each of the possible outcomes by the likelihood each outcome will occur and then summing all of those values".

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$E(X)=\sum_{i=1}^n X_i P(X_i)$

And if we use the values obtained we got:

$E(X)=(1060*0.5) +(1400*0.1) +(1620*0.4)=1318$

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