Homework SourseHow is this done Fine the t value such that 025 area of the
How is this done?
Fine the t- value such that 0.25 area of the area under the curve is to the left of the t- value. Assume the degree of freedom is 120.
How is this done?
Fine the t- value such that 0.25 area of the area under the curve is to the left of the t- value. Assume the degree of freedom is 120.
Fine the t- value such that 0.25 area of the area under the curve is to the left of the t- value. Assume the degree of freedom is 120.
Solution
The range of t value is minus infinity to positive infinity and the total area under curve is 1. The t-value which give the total area 0.25 on the left side is of the curve is -0.67654 with 120 degree of freedom. The t-distribution have symmetric curve with men zero. Therefore, the t-value for the same area (0.25) and same degree of freedom (120) at the right side of the curve is 0.67654. It can calculate in excell using \"T.INV(probability, deg_freedom)\". For this question probability=0.25 and deg_freedom=120. So, you can write in excel as \"T.INV(0.25, 120)\".
