Question

Consider the value of t such that the area under the curve between −|t|−|t| and |t||t| equals 0.9.

Step 2 of 2 :  

Assuming the degrees of freedom equals 26, select the t value from the t table.

Answer 1

We want to find, the value of t such that the area under the curve between -|t| and |t| equals 0.9.

That means, confidence level = 0.90

=> significance level = 1 - 0.90 = 0.10

Degrees of freedom = 26

Using t-table, we get t-value at 26 degrees of freedom and two-tailed area = is, t = 1.706

=> t-value = 1.706