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If x_(1)N(mu ,sigma ^(2)) and x_(2)N(mu ,sigma ^(2)) are independent and identically distributed normal random variables, then what's the difference between 2x_(1) and x_(1)+x_(2) ?
If
x_(1)N(\\\\mu ,\\\\sigma ^(2))
and
x_(2)N(\\\\mu ,\\\\sigma ^(2))
are independent and identically distributed normal random variables, then what's the difference between
2x_(1)
and
x_(1)+x_(2)
? They both have normal distributions.\ Choose the correct answer below.
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