1 point The average age of residents in a large residential retirement community is 69 years with standard deviation 9 years. A simple random sample of 100 residents is to be selected, and the sample mean age x of these residents is to be computed. The probability that the average age, x, of the 100 residents selected is less than 69.15 years is: 0.195. 0.805. 0.043. 0.568.