A test to determine whether a certain antibodies present is 99 1.1% effective this means that the test will accurately come back negative if the antibodies not present 99.1% of the time the probability of a test coming back positive with the antibiotic is not present is 0.009 suppose the test is given to seven randomly selected people who do not have the antibodies what is the probability that the test comes back negative for all seven people And what is the probability that the test comes back positive for at least one of the seven people