In а test оf weight lоss prоgrаms, 40 rаndomly selected adults used the Atkins weight loss program. After 12 months, their mean weight loss was found to be 2.1 lbs., with a standard deviation of 4.8 lbs. Construct and interpret 90% confidence interval estimate of the mean weight loss for all such subjects. Does the Atkins program appear to be effective? Use PANIC to answer this.