Helppp me A principal orders t-shirts and wants to check some of them to make sure they were printed properly. She randomly selects 222 of the 101010 boxes of shirts and checks every shirt in those 222 boxes.

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