For a t distribution with 18 degrees of freedom, find the area, or probability, in each region. (Round your answers to three decimal places.) (a) to the right of 2.552 H (b) to the left of 1.330 U (c) to the left of 2.101 H (d) to the right of 1.734 H (e) between 2.552 and 2.552 U (f) between 2.101 and 2.101 U