The total time, measured in units of 100 hours, that a teenager runs her hair dryer over a period of one year is a continuous random variable X that has the density function f(x)= x, 0

Weeks 7 & 8 Normal Distribution “The bell Shaped Curve”: describes the shape for some quantitative, continuous random variables Has two parameters: o = mean determines the location. o = standard deviation determines spread, variation, scatter. The “area” under the curve within a range of X values is equal to proportion of the population within that range of X values