The college board sat college entrance exam consists of three parts: math, writing and critical reading (the world almanac 2012). sample data showing the math and writing scores for a sample of twelve students who took the sat follow. click on the datafile logo to reference the data. a. use a level of significance and test for a difference between the population mean for the math scores and the population mean for the writing scores. what is the test statistic? enter negative values as negative numbers. round your answer to two decimal places.