How many pairs of shoes does a typical teenage boy own? To nd out, two AP Statistics students surveyed a random sample of 20 male students from their large high school. Then they recorded the number of pairs of shoes that each boy owned. Given is a dotplot of the data. Jackson, who reported owning 22 pairs of shoes, has a standardized score of z = 1.10. o o o . o . What is the correct interpretation of Jackson's z-score? 0 5 10 15 20 25 30 35 40 Number of pairs of shoes 0 To calculate this value, take Jackson's number of pairs of shoes, subtract the class average, and then divide by the standard deviation. 0 The number of pairs of shoes owned by Jackson is 1.10 standard deviations above the mean number of pairs of shoes owned by the boys in the sample. 0 His value is 1.10 standard deviations above the mean. 0 Jackson's pairs of shoes outnumbered his classmates by a factor of 1.10. C) Jackson owns 1.10 more pairs of shoes than average