The brain volumes ​(cm cubed​) of 20 brains have a mean of 1119.1 cm cubed and a standard deviation of 121.7 cm cubed. Use the given standard deviation and the range rule of thumb to identify the limits separating values that are significantly low or significantly high. For such​ data, would a brain volume of 1382.5 cm cubed be significantly​ high?

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The brain volumes ​(cm cubed​) of 20 brains have a mean of 1119.1 cm cubed and a standard deviation of 121.7 cm cubed. Use the given standard deviation and the range rule of thumb to identify the limits separating values that are significantly low or significantly high. For such​ data, would a brain volume of 1382.5 cm cubed be significantly​ high?

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