A local university claims that the incoming freshman class consists of students with a mean GPA of 3.4 with a standard deviation of 0.35. They are going to randomly place the freshmen into orientation groups of size 30. What is the probability that one of these groups has a mean GPA of 3.55 or higher?

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered