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A group of adult males has foot lengths with a mean of 26.89 cm and a standard deviation of 1.12 cm. Use the range
rule of thumb for identifying significant values to identify the limits separating values that are significantly low or
significantly high. Is the adult male foot length of 24.3 cm significantly low or significantly high? Explain.

Significantly low values are __ cm or lower.

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Step-by-step explanation:

rain volumes (cm cubedcm3) of 50 brains vary from a low of 904 cm cubedcm3 to a high of 1502 cm cubedcm3. Use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 171.5 cm cubedcm3, assuming the estimate is accurate if it is within 15 cm cubedcm3.

1502 - 904 = 598 / 4 = 149.5

Compare the result to the exact standard deviation.

the approximation is not accurate because the error of the range rule of thumb's approximation is greater than 15...

Significantly low values are...

(mean) - 2 * (standard deviation)

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