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Sample mean of the first random variables

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A random sample size of 41 is produced from a normal population with mean u and a standardd deviation sigma = 1. Let X(estimated) = (i=1E40 Xi)/40 be the sample mean of the first random variables in this random sample. Find the probability that . I X41 -X(estimated)I < 0.5

Reference no: EM132039565

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