Help plz if anybody know the answer

Use the following scenario to answer the question. topic: sampling. (ch. 7) scenario: the following are recorded values of snowfall (in inches) during the entire year at sixteen ski resorts: 64 62 41 50 49 47 33 72 52 40 76 50 26 36 36 57 (a) the mean value of rainfall (in inches) for this population of 16 cities is: (b) the sample mean using the first four values in the first row as your sample is: (c) the sampling error using the first four values in the first row as your sample is: (d) the sampling error using all of the eight values in the first row as yoursample is: