'14. Suppose we are studying aggressive behavior among 13- to 16-year-old boys in a youth detention facility. The variable is operationalized as the number of aggressive actsverbal insults and threats, acts of physical violence and destruction of propertycommitted over the past week. The acts are tabulated by observing videotapes of the facility's recreation rooms and grounds, library, rest rooms, and cafeteria. We compute descriptive statistics on this variable and obtain the following results: X = number of aggressive acts 2 = 16.8 acts 5X = 4.4 acts :1. Draw and label the normal curve for these acts. b. The following table includes data for just a few of the observations. Complete it by estimating each Zx by sight (i.e., by simply observing X on the curve). Chapter 5 Measuring Dispersion or Spread in a Distribution of Scores 153 c. Now compute the exact Z-score for each X-score. (Show the formula and computation for X : 9 acts.) X (acts) Sight Estimate of Zscore (SD) Computed Zscurc (SD) 12 19 26 14