Campus administrators want to evaluate the effectiveness of a new mindful eating program. Students who attend a series of campus programs about mindfulness are given a survey that uses 20 items measuring awareness of their own eating patterns to generate a mindfulness score. In the next semester, those participants are contacted and asked to complete the same survey. Administrators test whether students reported healthier patterns after participation in the program. Which of the following statistics would you use for your analysis? 

Two psychologists, at two different institutions, studied the effects of the size of families (only child, 1 sibling, 2 or more siblings) of adult men and women on their sense of responsibility. The measure of personal responsibility averaged responses across 15 items that asked for 5-point Likert ratings. Which of the following statistics is most appropriate for this analysis? 

A study was designed to test the effects of science fiction movies on participants' belief in the supernatural. A scale was designed to measure the degree that a subject believes in the supernatural on a 1-7 Likert Scale (high scores indicate high levels of belief). Fifty-seven subjects, selected via random digit dialing (RDD) responded to the scale before and after watching Return of the Jedi, a popular science fiction movie. 

A researcher examined the effect of different kinds of music on general math ability. Forty-eight subjects were randomly assigned to do a series of math tasks under one of three conditions: 16 while listening to soft gentle music, 16 while listening to loud intense music, and 16 while in silence. The math quiz contained arithmetic, geometry, and word problems. There were 25 items that were 2 points each. 

A psychologist is interested in the relationship between job satisfaction and stress. Within a large corporation, the psychologist asked a random sample of workers two questions. The first question asked workers to rate their overall satisfaction with their job on a scale from 1 to 50. The second question asked the workers to rate their stress level during the past week on a scale from 1 to 50. What type of statistical test best assesses the relationship between job satisfaction and level of stress? 

Q7. Whether the child has a bicycle helmet.  

2. a. Which statistical test would you use to do the bivariate analysis? 

2. b. Which statistical test would you use to do the multivariable analysis? 

# of times over the past month that the child rode his/her bike without wearing a helmet. 

1. a. Which statistical test would you use to do the bivariate analysis? 

2. b. Which statistical test would you use to do the multivariable analysis? 

Whether the child ever rode his/her bike in the last month without wearing a helmet. 

1. a. Which statistical test would you use to do the bivariate analysis? 

2. b. Which statistical test would you use to do the multivariable analysis? 

Score on a scale measuring knowledge of why it is important to use bicycle helmets. 

1. a. Which statistical test would you use to do the bivariate analysis? 

2. b. Which statistical test would you use to do the multivariable analysis?