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

Locate the row corresponding to \(13\) degrees of freedom in the t - distribution table.

Step2: Locate the column

Locate the column corresponding to an area of \(0.15\) in the right - tail.

Step3: Find the t - value

The intersection of the row (df = 13) and the column (right - tail area = 0.15) gives the t - value.

Answer:

\(1.135\)