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IB Math Studies SL Study Guide Fall Semester Directions: Read and work each problem carefully. Use the chart below to answer questions #1 - 8. Class Voted Yes Voted No Left Blank Totals Freshmen 24 10 38 Sophomores 28 6 35 Juniors 32 46 8 86 Seniors 46 32 11 89 Totals 130 94 24 248 1. What is the chi-squared value? 2. What is the value for the degrees of freedom? 3. What is the p-value? 4. If we test this at a 5% level of significance, the critical value on the X" table is 12.592. What inequality best describes the relationship between X" and the critical value? 5. Using the information in question #1 and question #4 what should we do? 6. What is true about the p-value as evidence for rejecting the Null of the X - Test