In Ogilvie's class of 40 students, 24 students report that English is their favorite class and 40% of the students report that keyboarding is their favorite class. Show your work to explain how to determine whether more students prefer English or keyboarding?

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297

Can some one explain this i got sent this. is this a threat i’m scared

Simplify the following expression 48^1/2