Patrick is 11 years and 4 months old. His pet python is 4200 days old. Who is older? Compare their ages by converting both to months. Assume there are 30 days in each
month.
(The) or
is older. It is
months old.

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed