One member of the lockport high school will be chosen randomly for a trip over spring break. there are 900 students in the high school. there is a probability of 10% that the student chosen is in the band and the choir. if there are 45 members in the choir and 57 members in the band, what is the probability that the randomly-chosen student is in the choir or in the band, but not both? if necessary, round your answer to the nearest hundredth.