(a) Find the sample mean. x= (Round to one decimal place as needed.)

The monthly incomes for 12 randomly selected people. each with a bachelor's degree in economics. are shown on the right Complete parts (a) through (c) below. Assume the population is distributed. (a) Find the sample mean. - = (Round to one decimal pk.ce as needed.) 4450.64 4455.32 4283.09 3946.83 4596_52 415149 4527 4023.66 4366,E6 372787 440771 4221.91