Question 13 Lots of natural and social phenomena have an element of randomness, and some of these Correct phenomena follow a normal distribution, more commonly known as a bell curve. The equation for a normal distribution is 1.00 points out of 1.00 42 Here, x describes the measurement of the phenomenon and y tells something about the relative likelihood of its occurrence. Suppose that x measures life expectancy in the United States, in years. The parameter u is called the mean and o is called the standard deviation. What are the dimensions of u? Select one: a. TV 2 O b. T O C. 1/T2 O d. LT O e. Cannot be determined from the information given