a​ new, simple test has been developed to detect a particular type of cancer. the test must be evaluated before it is put into use. a medical researcher selects a random sample of 1,000 adults and finds​ (by other​ means) that 1% have this type of cancer. each of the 1,000 adults is given the​ test, and it is found that the test indicates cancer in 97% of those who have it and in 2% of those who do not?