One Sample T-Test One Sample T-Test 95% Confidence Interval Statistic df p Mean difference Effect Size Lower Upper sleep Student's t 50.9 499 <.001 cohen d note. h. j normality test w p sleep a low p-value suggests violation of the assumption descriptives n mean median sd se answer following questions refer to last page this document that provides an example one sample t-test: a. what was null hypothesis answer: b. alternative c. number hours in d. is standard deviation e. value tobtained f. how many degrees freedom did thave q. pvalue if available report your three decimal places. would you retain or reject>