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1. How to calculate the sample mean? A simple random sample of size 10 is taken. The data are known to come from a Normal

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1. How to calculate the sample mean?

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A simple random sample of size 10 is taken. The data are known to come from a Normal distribution with a mean of -1.03 and a standard deviation of 4. Give the mean of the sample mean to two decimal places. A simple random sample of size 10 is taken. The data are known to come from a Normal distribution with a mean of -O.9 and a standard deviation of 5. Give the standard deviation of the sample mean to two decimal places

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