A researcher is interested in testing if the average monthly spending on groceries is higher for Arizona residents than it is for Texas residents. Researchers collect data on 200 individuals from each state and find the following from their sample data. • Arizona Residents - Average spending of $650 dollars with a variance of $500. Texas Residents - Average spending of $625 with a variance of $300. For any testing, assume that the populations variances are equal. Let the Arizona residents be population 1 and the Texas residents be population 2 in any formulas. Calculate the appropriate test statistic to test the researcher's claim using a 5% significance level. Based on the data collected and the appropriate test, which of the following statements is correct? Note, please round any intermediate steps to 2 decimals and the test statistics below have been rounded to two decimals. Calculate the appropriate test statistic to test the researcher's claim using a 5% significance level. Based on the data collected and the appropriate test, which of the following statements is correct? Note, please round any intermediate steps to 2 decimals and the test statistics below have been rounded to two decimals. O No test statistic is needed. We can simply look at the sample averages and prove the researcher's claim. Test statistic = 0.63. We cannot prove that there is a difference in spending between Arizona and Texas residents. Test statistic = 0.63. We can prove that there is a difference in spending between Arizona and Texas residents. Test statistic = 9.80. We can prove that there is a difference in spending between Arizona and Texas residents. Test statistic = 12.50. We can prove that there is a difference in spending between Arizona and Texas residents. Test statistic - 400. We can prove that there is a difference in spending between Arizona and Texas residents.