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The brain volumes (cm) of 20 brains have a mean of 1076.3 cm3 and a...

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The brain volumes (cm) of 20 brains have a mean of 1076.3 cm3 and a standard deviation of 126.6 cm. Usethe given standard deviation and the range rule of thumb to identify the limits separating values that aresignificantly low or significantly high. For such data, would a brain volume of 1299.5 cm be significantly high?

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