Hello I need help with two questions. Please see below.

Research Background

A study by Chein, Albert, O'Brien, Uckert, and Steinberg (2011) found that when a peer was present while driving, adolescents (14-18 year olds) engaged in more risky driving decisions and crashed more frequently during a driving simulation than young adults (19-22 year olds) and adults (24-29 year olds). This finding provides rationale behind the laws prohibiting the number of non-family passengers for adolescent drives in many states. Imagine we conducted a similar study in which we recruited 12 adolescents, 12 young adults, and 12 adults to perform a brief 6-minute driving simulation while a same-age peer was watching. For each participant the number of times they crashed was counted and the hypothetical data was entered into the provided SPSS dataset. Your task for Part I will be to analyze the results of this study using a one-way between-subjects ANOVA.

SOURCE: Chein, J., Albert, D., O'brien, L., Uckert, K., & Steiniberg, L. (2011). Peers increase adolescent risk

taking by enhancing activity in the brain's reward circuitry. Developmental Science, 14, F1-F10. doi:10.1111/j.1467-7687.2010.01035.x

Post Hoc Tests Multiple Comparisons Dependent Variable: Crashes Tukey HSD . Mean 95% Condence Interval (I) Developmental Age (J) Developmental Age Difference \" Group Group J) Std. Error Sig. Lower Bound Upper Bound Adolescents (1418 Young Adults (1922 2.083 .883 .061 .08 4.25 years old) years old) Adults (2429 years 3.000,! .883 .005 .83 5.17 old) Young Adults (1922 Adolescents (1418 2.083 .883 .061 4.25 .08 years old) years old) Adults (2429 years .917 .883 .558 1.25 3.08 old) Adults (2429 years Adolescents (1418 3.000* .883 .005 5.17 .83 old) years old) Young Adults (1922 .917 .883 .558 3.08 1.25 years old) *. The mean difference is signicant at the 0.05 level. Homogeneous Subsets Crashes Tukey HSDa Developmental Age Subset for alpha = 0-05 Group N 1 2 Adults (2429 years 12 3.67 old) Young Adults (1922 12 4.58 4.58 years old) Adolescents (1418 12 6.67 years old) Sig. .558 .061 Means for groups in homogeneous subsets are displayed. a. Uses Harmonic Mean Sample Size = 12.000. One-way ANOVA [DataSet1] /Users/rachelsaldivar/Desktop/Week 5 Assignment/TeenageDrivers. sav Descriptives Crashes 95% Confidence Interval for Std. Mean N Mean Deviation Std. Error Lower Bound Upper Bound Minimum Maximum Adolescents (14-18 12 6.67 2.839 820 4.86 8.47 1 10 years old) Young Adults (19-22 12 4.58 1.379 .398 3.71 5.46 6 years old) Adults (24-29 years 12 3.67 2.015 .582 2.39 4.95 0 7 old) Total 36 4.97 2.455 409 4.14 5.80 0 10 Test of Homogeneity of Variances Levene Statistic df1 df2 Sig. Crashes Based on Mean 2.792 N 33 076 Based on Median 2.362 N 33 .110 Based on Median and 2.362 N 28.480 .112 with adjusted df Based on trimmed 2.678 2 33 084 meanTest of Homogeneity of Variances Levene Statistic df1 df2 Sig Crashes Based on Mean 2.792 2 33 .076 Based on Median 2.362 N 33 .110 Based on Median and 2.362 N 28.480 112 with adjusted df Based on trimmed 2.678 2 33 .084 mean ANOVA Crashes Sum of Squares df Mean Square F Sig Between Groups 56.722 2 28.361 6.068 .006 Within Groups 154.250 33 4.674 Total 210.972 35 Robust Tests of Equality of Means Crashes Statistica df1 df2 Sig. Welch 4.324 2 20.385 027 Brown-Forsythe 6.068 2 25.424 .007 a. Asymptotically F distributed