Find the-value(s) for each of the following cases. Round your answers to 3 decimal places. Enter negative values as negative number.

a.Upper tail area of.025 with 12degrees of freedom is___.

b.Lower tail area of.05 with50degrees of freedom is___.

c.Upper tail area of.01 with30degrees of freedom is___.

d.Where 90%of the area falls between these twot-values with25 degrees of freedom. ( , )

e.Where95%of the area falls between these twot-values with45degrees of freedom. ( , )

Provide excel spreadsheet