Suppose nine items are randomly sampled from a normally distributed population with a mean of 100 and

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Suppose nine items are randomly sampled from a normally distributed population with a mean of 100 and a standard deviation of 20. The nine randomly sampled values are 125 95 66 116 99 91 102 51 110 Calculate the probability of getting a sample mean that is smaller than the sample mean for these nine sampled values.

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Hemstone Ouma

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