Solve the Problem $\begin{array} { c c c c c c c } 1.3 & 7.2 & 4.2 & 12.5 & 6.6 & 2.5 & 5.5 \end{array}$

Multiple Choice

Solve the problem.
-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: $\begin{array} { c c c c c c c } 1.3 & 7.2 & 4.2 & 12.5 & 6.6 & 2.5 & 5.5 \end{array}$
Based on these results, a confidence interval for the population mean is found to be $\mu = 5.7 \pm 4.4$ . Find the degree confidence.

A) 90%
B) 95%
C) 98%
D) 99%