Student researcher identified 2 types of earthquakes (identified by their moment tensors Counts with earthquakes of same type Counts with earthquakes of different follow one another types following one another Second time Second time period Marginal Sums Second time Second time period Marginal Sums period, earthquake no earthquake period, earthquake no earthquake happens happens happens happens First time period, 148 274 422 First time period, 5 314 319 Earthquake Earthquake happens happens First time period no 276 2626 2902 First time period no 314 2691 3005 earthquake earthquake happens happens Marginal sums 424 2900 3324 Marginal sums 319 3005 3324 Question 1: Test in each case whether the rows and columns are independent (no association). Question 2: Calculate -E VE for each cell. What is the difference between the two tables. Question 3: Propose a hypothesis consistent with your observations