Use the given information to find the number of degrees of freedom, the critical values xi and XZR: and the confidence interval estimate oft: lt is reasonable to assume that a simple random sample has been selected from a population with a normal distribution White Blood Counts of Women 90% confidence; n :146, s : 1.96 (1000 cellspr) ll df: (Type a whole number) (Round 0 two deCImal places as needed ) (Round 0 two deCImal places as needed ) The confidence interval estimate of U is (1000 cellspr)