1. You just took a standardized test. You know that the mean of the test is u=100 with a standard deviation of 20. You also know that the scores are normally distributed. You were told that your score fell at the 30th percentile. What must have been your raw score on the test?
2. GQR scores are standardized to have a mean u=100 and a standard deviation of 15; the distribution of scores is normal in form. What is the probability that a random sample of n=20 students will have a mean GWR score between M=125 and M=130?