question archive 1) When does one want to use a One-Mean t-Test over a One-Mean z-Test? 2
1) When does one want to use a One-Mean t-Test over a One-Mean z-Test? 2
Subject:StatisticsPrice: Bought3
1) When does one want to use a One-Mean t-Test over a One-Mean z-Test?
2. Using your t-table, estimate the P-value of a one-mean t-test that is right-tailed, n = 14, and t = 1.525
3. The mean height of American males is 69.5 inches. The heights of the 43 male U.S. presidents (Washington to Obama) have a mean of 70.78 inches and a standard deviation of 2.77 inches. Treating the 43 presidents as a simple random sample, determine if there is evidence to suggest that U.S. presidents are taller than the average American male. Use α = 0.05 level of significance and clearly label each step. (This question was written before Trump came into office)
