Cu rrent Attempt in Progress Use a tdistribution to answer this question. Assume the samples are random samples from distributions that are reasonably normally distributed, and that a t-statistic will be used for inference about the difference in sample means. State the degrees of freedom used. Find the endpoints of the tdistribution with 2.5 % beyond them in each tail if the samples have sizes n1 = 13 and 112 = 25. Enter the exact answer for the degrees of freedom and round your answer for the endpoints to two decimal places. degrees of freedom = n endpoints =