Half of All People with Social Security Numbers (SSNs) Have

Short Answer

Half of all people with social security numbers (SSNs) have a number that ends with a 0, 2, 4, 6, or 8. A sample of 100 students found that 45 had even numbered SSNs. The sample proportion has a z-score of -1.0. If a second =sample of 100 students is taken, what is the probability that the sample proportion has a z-score less than -1.0?