Find the? t-value such that the area in the right tail is 0.025with 9 degrees of freedom. nothing ?(Round to three decimal placesas? needed.) ?(b) Find the? t-value such that the area in the righttail is 0.25 with 29 degrees of freedom. nothing ?(Round to threedecimal places as? needed.) ?(c) Find the? t-value such that thearea left of the? t-value is 0.15 with 7 degrees of freedom.?[Hint: Use? symmetry.] nothing ?(Round to three decimal places as?needed.) ?(d) Find the critical? t-value that corresponds to 60?%confidence. Assume 13 degrees of freedom. nothing ?(Round to threedecimal places as? needed.)