Population d. About how many immigrants would arrive (or depart) in 10 years? Will the population grow?

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Population d. About how many immigrants would arrive (or depart) in 10 years? Will the population grow? Does the expectation seem close to the "middle" of the distribution?
Suppose immigration and emigration change the sizes of four populations with the following probabilities.
Population d. About how many immigrants would arrive (or depart)

Write the result as a random variable and find the expectation.

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