The following tables summarize responses from a survey askin…

The following tables summarize responses from a survey asking college students to respond to the following question: “Within the last 30 days, how often do you think the typical student at your school used alcohol?” Both men and women responded to this question. Use the data below to calculate the observed chi-square statistic. **Report your answer to 4 decimal places.   Perceptions of Typical Alcohol Use Gender Never 1 + Days Daily Female 13 59 38 Male 12 51 34  

A researcher studies the relationship between the amount of…

A researcher studies the relationship between the amount of time spent studying for an exam and the number of errors made.  A sample of twenty students who have the same GPA are randomly assigned to one of four groups:  1, 2, 3, or 4 hours of study time. After studying the specified time, all students took an identical exam and the number of errors each student made was counted. What is the dependent variable?