Can you help me with steps to find this answer using excel?

Section Exercise $22 A random sample of '14 items is drawn from a population whose standard deviation is unknown. The sample mean is I = T89 and the sample standard deviation is s = 5. Use pdix D to nd the values of Student's t. [a1 Construct an interval estimate of u with 98% condence. [Round your answers to 3 decimal places.] Tl'le98%oondencei1tervdisfmml:|hl:| [b] Construct an interval estimate of u with 98% condence. assuming that s = '19. {Round your answers to 3 decimal places.) Tl'le98%oondencei1tervdisfmml:|hl:| [c1 Construct an interval estimate of u with 98% condence. assuming that s = 29. {Round your answers to 3 decimal places.) 111e98%condencei1tervdisom |:|h|:| [d] Describe hollIlr the condence interval changes as s increases. XT'H. . I L) The Interval stays the same as s Increases. 2-K . . n. L) The Interval gets wIder as s Increases. 2-K . I L) The Interval gets narrower as s Increases