Suppose a study of n=47 students was conducted asking their weeknight study time. The mean response was 137 min. with an assumed KNOWN standard deviation of 65 min. The NEW hypothesis of interest is whether the mean study time NOT EQUAL TO 120 min. What is the test statistic? Note: Enter X.XX AT LEAST ONE DIGIT BEFORE THE DECIMAL, TWO AFTER and round up. Thus, 27 is entered as 27.00, 3.5 is entered as 3.50, 0.3750 is entered as 0.38