The critical value for a 90 confidence interval based on the
The critical value for a 90% confidence interval based on the t(21) distribution.
| A. | 1.721 | 
| B. | 1.725 | 
| C. | 1.645 | 
| D. | 1.717 | 
Solution
Answer is option A. 1.721

The critical value for a 90% confidence interval based on the t(21) distribution.
| A. | 1.721 | 
| B. | 1.725 | 
| C. | 1.645 | 
| D. | 1.717 | 
Answer is option A. 1.721

