A standardized exam scores are normally distributed. In a recent year, the mean test score was 20.6 and the standard deviation was 5.7. The test scores of four students selected at random are 13,23,7,and 35. Find the z-scores that correspond to each value and determine whether any of the values are unusual.

Answer rating: 100% (QA)

The z score for the score 13 with the mean 206 and standard deviation of 57 can be obtained as follo... View the full answer