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5 October, 08:59

A nursery sells trees of different types and heights. these trees average 60 inches in height with a standard deviation of 16 inches. suppose that 75 pine trees are sold for planting at city hall. what is the standard deviation for the sample mean?

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  1. 5 October, 09:05
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    Solution: We are given:

    μ=60,σ=16, n=75

    Now the standard deviation of the sample mean = σ/sqrt (n) = 16/sqrt (75) = 1.8475

    Therefore the standard deviation for the sample mean is 1.8475
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