You are the product manager for Joe Totter Supermarket. You are interested in validating the contents of the one-pound bags of Keen potato chips. You select a random sample of 9 bags and empty the contents of each bag, one at a time, onto a scale and record the weights in pounds. Below are the recorded sample weights: 1.11.21.00.91.11.31.21.1

Assuming the weights of potato chips are normally distributed, estimate the mean weight of a bag of Keen potato chips using a 95% confidence interval.