Forest bathing, also called Shinrin-yoku, is the practice of taking short, leisurely walks in a forest to enhance positive health. To test the usefulness of this practice, the time forest bathing per day was recorded among eight patients with depression who subsequently showed a marked reduction in their symptoms over the last week. The data are given in the table.

a. Find the confidence limits at a 95% CI for this sample.
b. Suppose the null hypothesis states that the average time spent forest bathing among patients is 3.5 hours per day. What would the decision be for a two-tailed hypothesis test at a .05 level of significance?

Time Spent in the Forest (in hours) 4.2 4.8 5.0 3.8 4.2 5.5 4.1 4.4