A television show tests the abilities of alleged psychics by presenting contestants with a set of 444 cards placed upside down, 111 of which has a star printed on it. Each contestant attempts to identify which card has the star on it for a series of 505050 trials. Assuming that the contestants are purely guessing, what are the mean and standard deviation of the number of trials where the contestant guesses correctly? you may round your answers to the nearest tenth.