Question:

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

Last updated: 7/11/2022

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

The brain volumes (cm³) of 20 brains have a mean of 1076.3 cm3 and a standard deviation of 126.6 cm³. 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 1299.5 cm³ be significantly high?