content area top Part 1 The following data represent the concentration of dissolved organic carbon (mg/L) collected from 20 samples of organic soil. Assume that the population is normally distributed. Complete parts (a) through (c) on the right. 17.50 29.80 27.10 16.51 14.00 8.81 5.20 20.46 14.90 33.67 30.91 14.86 15.72 15.35 9.72 19.80 14.86 8.09 15.72 18.30 Question content area bottom Part 1 (a) Find the sample mean. The sample mean is 17.56. (Round to two decimal places as needed.) Part 2 (b) Find the sample standard deviation. The sample standard deviation is enter your response here. (Round to two decimal places as needed.) Part 3 (c) Construct a 95% confidence interval for the population mean mu. The 95% confidence interval for the population mean mu is ( enter your response here, enter your response here,). (Round to two decimal places as needed.)