Fat contents (in percentage) for 10 randomly selected hot dogs were given in the article "Sensory and Mechanical Assessment of the Quality of Frankfurters". Use the following data to construct a 90% confidence interval for the true mean fat percentage of hot dogs: (Give the answers to two decimal places.)
( , )
| 25.7 |
21.8 |
23.3 |
17.4 |
30.3 |
21.5 |
26.0 |
16.4 |
21.3 |
19.9 |