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The data represent scores on an English prociency test for samples of students from University A and University B in China. The purpose of this analysis is to determine whether there is a difference in the quality of preparation in English between University A and University B before an American university develops transfer programs with these universities. Assume the standard deviations are the same for the two Chinese universities. A B 56 80 56 86 61 69 90 75 69 82 78 83 76 96 86 82 What type of test is this? How many degrees of freedom? What is the absolute value of the test statistic (step 4) to two decimal places? What is the p-value to four decimal places? Should you reject the null at 10%? O yes O no What is the margin of error for a 90% confidence interval to two decimal places