Example 17-20. A random sample x1, x2, ..., X, is taken from a normal population with mean zero and variance o?. Examine if E x?/n is a MVB estimator for o². i = 1

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Example 17-20. A random sample x1, x2,
X2, .
, Xn is taken from a normal population with
mean zero and variance o?. Examine if x}/n is a MVB estimator for o?.
i = 1
Transcribed Image Text:Example 17-20. A random sample x1, x2, X2, . , Xn is taken from a normal population with mean zero and variance o?. Examine if x}/n is a MVB estimator for o?. i = 1
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