1. Liv attends "Happy Days" preschool. The preschool ran assessments on the children's motor skills (such as ability to tie a shoe), social skills (such as sharing and saying "please" and "thank you"), and school readiness (such as knowing ABCs and basic counting). The motor skills test has a class mean of 6 with a standard deviation of 1, the social skills test has a class mean of 10 with a standard deviation of 2, and the school readiness test has a mean of 16 with a standard deviation of 4. Liv's parents are given a report that indicates that herzscore for motor skills is -1.11, for social skills it is 0.25, and for school readiness it is 0.