+66 Help! I've tried to understand confidence intervals but everytime, I just don't know what formula to use or how to start.
1. The records of a weight loss clinic reveal that the last group of 9 patients lost (in kg) the following values: 8, 12, 13, 12, 11, 10, 6, 8, 17. Calculate the confidence interval at 98% and interpret your result
