Answer:
To find the critical t-value for a confidence level of 80% with a sample size of 11, we need to consult a t-distribution table or use a statistical software.
Using a t-distribution table with 10 degrees of freedom (sample size - 1), we can find the critical t-value for a two-tailed test at a confidence level of 80%.
From the table, we find that the critical t-value is approximately 1.363.
Therefore, the critical t-value for a confidence level of 80% with a sample size of 11 is approximately 1.363.
Explanation:
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