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    I have question can any one solve it for me and explain me fully how we cancel the mu in this question

    The annual income of doctors constitutes a highly positive skewed distribution. Suppose the population has an unknown mean and a standard deviation of £10,000. An estimate of the population mean is to be made using the sample mean. This estimate must be within £1000 either side of the true mean:

    (a) if n = 100, find the probability that the estimate will meet the desired accuracy
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    Hi there,

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