6 A simple random sample of students is selected and the stu

6. A simple random sample of students is selected, and the students are asked how much time they spent preparing for a test. The times (in hours) are as follows:

1.3, 7.2, 4.2, 12.5, 6.6, 2.5, 5.5

Based on these results, a confidence interval for the population mean is found to be 5.69 +/- 2.70 Find the degree of confidence.