The readings from the 20 diabetic patients are given here: 203.1 184.5 206.8 211.0 218.3 174.2 193.2 201.9 199.9 194.3 199.4 193.6 194.6 187.2 197.8 184.3 196.1 196.4 197.5 187.9 The manufacturer claims that the diabetic patients should have a standard deviation of 5 mg/dL. Use these data (sample standard deviation is 9.908 mg/dL) to determine whether there is sufficient evidence that the variability in readings from the diabetic patients is higher than the manufacturer's claim. A 95% confidence interval for o is (56.78, _). Calculate the upper bound for this confidence interval. Use 2 decimal places. Use the following app to find the critical value: