6. A questionnaire measures an index of risk-taking behavior in respondents. Scores are standardized so that 100 represents the population average. The questionnaire is applied to a sample of teenage boys and girls. The data for boys is {72, 73, 86, 95, 95, 95, 96, 97, 99, 125). The data for girls is (89, 92, 93, 98, 105, 106, 110, 126, 127, 130). Explore the group differences with side-by-side boxplots. Create the boxplots and then describe how risk taking behavior varies between genders. 7. Which study will require a larger sample size, one done with 80% power or 90% power when alpha (type | error) is set at 0.05 and we use the same population and expected difference and variation for both studies? 8. True or False: When using data from the same sample, the 95% confidence interval for u will always support the results from a 2-sided, 1 sample t-test. Explain your reasoning