The weights of a group of 10-year-old boys are normally distributed with a mean of 70 pounds and a standard deviation of 12 pounds. What is the z-score for a 10-year-old boy who weighs 64 pounds?

Afarmer has decided to divide his land area in half in order to plant soy and corn. calculate the area of the entire area so he knows how much soil is needed. each bag of soil covers 20 square yards. how many bags should the farmer purchase? (4 points) 1 bag 2 bags 3 bags 4 bags