4.39. The data in Table 4.6 (see the psychological profile data: www.prenhall.com/statistics) con- sist of 130 observations generated by scores on a psychological test administered to Peru- vian tecnagers (ages 15, 16, and 17). For cach of these teenagers the gender (male = 1, female = 2) and socioeconomic status (low = 1, medium = 2) were also recorded. The scores were accumulated into five subscale scores labeled independence (indep), support (supp), benevolence (benev), conformity (conform), and leadership (leader). Table 4.6 Psychological Profile Data Indep Supp Benev Conform Leader Gender Socio 27 13 14 20 12 13 24 25 14 20 15 16 18 20 17 12 22 22 21 NNN-H... NNNNN 10 11 26 17 14 12 14 11 19 11 23 18 27 10 22 7 10 17 22 22 Source: Data courtesy of C. Soto. (a) Examine cach of the variables independence, support, benevolence, conformity and leadership for marginal normality. (b) Using all five variables, check for multivariate normality. (c) Refer to part (a). For those variables that are nonnormal, determine the transformation that makes them more nearly normal