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#1. A population has a mean of 120 and a standard deviation of 65. A sample of size 81 will be taken. What is

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#1. A population has a mean of 120 and a standard deviation of 65. A sample of size 81 will be taken. What is the standard deviation of the sample mean? (A). 9.2857 (D). 81.0 (B). 7.2222 (E). 65.0 (C). 8.125 (F). None of the above. heet by 9:55

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