The following question require using the z score formula. . A population has a mean of u = 50 and a standard deviation of o = 10. For a score of x = 38, find the z score. A score of x = 36 corresponds to a z = 1.88, in a population with a mean of u = 32. What is the population standard deviation? A score of x = 124 corresponds to a z = 0.88, in a population with a standard deviation of o = 12. What is the population mean? . In a population of u = 300 and a standard deviation of o = 18.6, what score corresponds to a z = 2.66