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Suppose that a random sample is to be taken from a normal distribution for which the...

Suppose that a random sample is to be taken from a normal distribution for which the value of the mean θ is unknown and the standard deviation is 2. How large a random sample must be taken in order that P(| Xn −θ|≤ 0.1) ≥ 0.95 for every possible value of θ.

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