A new pizza business is coming to town. They want to take a survey to estimate the amount of money that students are willing to pay for a large pizza. They believe that the population standard deviation is 6.1. They want to be 95% confident. How many people do they need to ask to have a margin of error of $0.25?

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?