Question

determine the t - value in each of the cases
click the icon to view the table of areas under the t - distribution
(a) find the t - value such that the area in the right tail is 0.25 with 5 degrees of freedom
0.727 (round to three decimal places as needed.)
(b) find the t - value such that the area in the right tail is 0.15 with 13 degrees of freedom
(round to three decimal places as needed.)

Explanation:

Step1: Locate the row for degrees of freedom

For part (b), the degrees of freedom is 13.

Step2: Locate the column for the right - tail area

The right - tail area is 0.15.

Step3: Find the intersection value

In the t - distribution table, find the value at the intersection of the row with 13 degrees of freedom and the column with right - tail area 0.15.

Answer:

1.079