Sociologists suspect there's is a relationship between education level and level of social activity (e.g., bowling, dancing, church). Are the two variables (education and activity level) independent? Test at a = 54. Education High 16 Higher School I 20 (fe) College 16 Higher High School (fo) ICollege Level of Activity Above Average 30 50 10 About Average 10 50 60 Below Average 10 80 90 Totals 40 160 200 Ho: Ha: Decision Rule: Decision: Conclusion:

Which variable is most likely to be an independent variable? reading test score stress level running speed weight loss forms of therapy

1. A study comparing children's height to their reading level showed that 70% of children who were less than 48 inches tall had a reading level at or below 4th grade, while 80% of children who were 48 inches or taller had a reading level above 4th grade. There are 200 students total, and 110 of them are less than 48 inches tall.

review(7a):  The following table summarizes the outcome of a study that researchers carried to determine if females expressed a greater fear of heights than male. How many categorical variables are summarized in the table?                                                                      Men                                                     Women Expressed fear for heights                           68                                                          109 did not expressed a fear for heights            94                                                           89