The distribution of the sum of independent n 2 random

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The distribution of the sum of independent N(?, ?2) random variables is:

a. always approximately normal

b. always exactly normal

c. usually approximately normal

d. usually exactly normal e. sometimes approximately normal

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The distribution of the sum of independent n 2 random : the distribution of the sum of independent n? ?2 random variables isa. always approximately normalb. always exactly

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