D Question 4 2.5 pts A researcher wants to estimate the average age of college students at USF, it is known the age of a USF student follows a normal distribution with a mean of 22 years with a standard deviation of 3.5 years. The researcher collects a sample of 60 students and finds their average age is 20 years with a standard deviation of 1.5 years. What are the characteristics of the sampling distribution? O X~N(22,3.5) Q X~N(20,1.5) O X~N(22,1.5) O X~N(20, 3.5) O X~N(22,0.45) O X~N(20,0.45) ( X~NB22,0.45) O X~B(20,0.45)