Your manager is asking for the average viscosity of a product that you produce in a batch process.
Recorded below are the 12 most recent values, taken from consecutive batches. State any assumptions, and clearly show the calculations that are required to estimate a 95% confidence interval for the mean.
Interpret that confidence interval for your manager, who is not sure what a confidence interval is.
Raw data: [13.7, 14.9, 15.7, 16.1, 14.7, 15.2, 13.9, 13.9, 15.0, 13.0, 16.7, 13.2]
Mean: 14.67
Standard deviation: 1.16