Of the students in julia’s class, 0.5 eat lunch from home, 1/5 eat the school lunch and 30% each from the salad bar. if there are 200 students in the class, how many each lunch in the various forms. how would you prove all 200 students eat lunch?

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

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse

The data set represents the ages of players in a chess club. 27, 34, 38, 16, 22, 45, 54, 60. what is the mean absolute deviation of the data set?