Question: 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

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.

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

Population a Population b Population c Population d ber ability ber ability ber ability ber ability -1 0.40 1 0.4 0.4 0 0.2 00.2 1 0.3 2 0.1 0 0.2 0 0.3 10.30.2 1 0.3 2 0.1 20.4 100 0.1

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