Z Distribution .01-4.5
Observe the z values range - .01 - 4.5 This is not easy to do ; Trying to obtain the range of numbers that is needed. The Blue Formula is the t-statistic, with my formula substituted in for the variable sigma. And the Distribution is made by substituting f(x) in for the exponent in my formula. So, f(x) is the exponent in my formula.