Question: =+a. Suppose that a random sample of size 2 is to be selected without replacement from this population. There are 12 possible samples (provided that

=+a. Suppose that a random sample of size 2 is to be selected without replacement from this population. There are 12 possible samples (provided that the order in which observations are selected is taken into account):

1, 2 1, 3 1, 4 2, 1 2, 3 2, 4 3, 1 3, 2 3, 4 4, 1 4, 2 4, 3

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