# The value of t* for a 95% confidence interval when there were 10 pieces of data is?

**Solution:**

Given, sample size, n = 10

Alpha, ɑ = (1-0.95)/2

Alpha, ɑ = 0.025

Degree of freedom, df = n-1 = 10 -1 = 9

We have to find the value of t-critical at 95% confidence interval from the t-distribution table using the t-test formula

t-critical at df = 9 and ɑ = 0.025 is ±2.2621

Therefore, the value of t* is ±2.2621.

## The value of t* for a 95% confidence interval when there were 10 pieces of data is?

**Summary:**

The value of t* for a 95% confidence interval when there are 10 pieces of data is ±2.2621.

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