How do. You solve
{4+3[2^3÷2

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

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

Why is causation so much more difficult to prove than correlation?