An experimental study was designed to test the effect of noise on spatial reasoning among 10-10-year-olds. Each subject was given the same jigsaw puzzle in a quiet room. A month later, the same subjects were given the same puzzle with a TV playing cartoons and street noise. The researcher compared how long it took each subject to solve the puzzle in the two situations. What were the controlled, independent, and dependent variables

Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 25002500 grams and a standard deviation of 800800 grams while babies born after a gestation period of 40 weeks have a mean weight of 27002700 grams and a standard deviation of 385385 grams. if a 3232-week gestation period baby weighs 21252125 grams and a 4040-week gestation period baby weighs 23252325 grams, find the corresponding z-scores. which baby weighs lessless relative to the gestation period?

Benjamin is making bow ties. how many 1/2yards lomg bow ties can he make if he has 18 feet of fabric?

Which expression is equivalent to -12(3x-3/4)