Lola bought X pencils that cost 0.25 cents each and Y erasers that cost $0.50 she spent less than $3 which graph represents Louis purchase

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