WEEK 8 EXERCISES (the last oneyou made it!)

Enter your answers in the spaces provided. Save the file using your last name as the beginning of the file name (e.g., ruf_week8_exercises) and submit via Assignments. When appropriate, show your work.

1.When does the obtained chi-square value equal zero? Provide an example of when this might happen.

2.Using the following data, test the question that an equal number of Democrats, Republicans, and Independents voted during the most recent election. Test the hypothesis at the .05 level of significance. Do this by hand.

Political Affiliation

RepublicanDemocratIndependent

800

700

900

3.School enrollment officials expected a change in the distribution of the number of students across grades and were not sure whether it is what they should have expected. Test the following data for goodness of fit at the .05 level.

Grade123456

Number of students309432346432369329

The deadline for this assignment is 11:59 PM EST on Sunday of Week 8