The critical value is 2.65
Given,
The confidence interval = 99%
Sample size, n = 12
We have to find the critical value;-
Critical value;-
A critical value is the test statistic's value that establishes a confidence interval's upper and lower boundaries or the level of statistical significance for a given test.
Here,
The sample size n = 12,
Then, the degrees of freedom is n - 1 = 12 - 1 = 11
The critical value= t₀.₀₀₁/2 = t₀.₀₀₅
Using the t-table and selecting df =12 and since it’s a 2 tail the corresponding t-score is 2.65
Therefore, the critical value is 2.65
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