Question

The value of t∗ for a 95% confidence interval when there are 10 pieces of data is:

Answer 1

The t-critical value for 95% confidence interval is ±2.2621

Explanation:

We are given the following information in the question:

Sample size, n = 10

Alpha, α = 0.05

We have to find the value of t-critical at 95% confidence interval.

Degree of freedom = n - 1 = 9

`t_(critical)\text{ at degree of freedom 9 and}~\alpha_(0.05) = \pm 2.2621`

The t-critical value for 95% confidence interval is ±2.2621