Posted: January 29th, 2016

Enter your answers in the spaces provided. Save the file using your last name as the beginning of the file name (e.g., ruf_week4_exercises) and submit via “Assignments.” When appropriate, show your work.

Enter your answers in the spaces provided. Save the file using your last name as the beginning of the file name (e.g., ruf_week4_exercises) and submit via “Assignments.” When appropriate, show your work.

1. In the following statements, would your decision be to reject or fail to reject the null hypothesis? Provide an explanation for your conclusion.

1. The null hypothesis that there is no relationship between the type of music a person listens to and his/her crime rate (p< .05).

1. The null hypothesis that there is no relationship between the amount of coffee consumption and GPA (p= .62).

1. The research hypothesis that there is a negative relationship between the number of hours worked and level of job satisfaction (p= .51).

2. Think about the significance-meaningfulness debate.

1. Provide an example where a finding may be statistically significant and meaningful.

1. Provide an example where a finding may be statistically significant and not meaningful.

3. For each of the following situations, write out in words a research hypothesis.

1. Pedro wants to know if the weight loss of his group on the chocolate-only diet is representative of weight loss in a large population of middle-aged men.

1. The health department is charged with finding out if the rate of flu per thousand citizens for this past flu season is comparable to the average rate of the past 50 seasons.

1. Mike is almost sure that his monthly costs for the past year are not representative of his average monthly costs over the past 20 years.