I promise I will mark as brainiest and 5 stars and thanks a point moves on the straight line 5x - 2y =1 where its y- coordinate is twice of the square of its x-coordinate find coordinate of this point

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