Suppose an isolated weather-reporting station has an electronic device whose time to failure is given by the exponential model 1 fr (y; 0) e u/0; 0 Suppose an isolated weather-reporting station has an electronic device whose time to failure is given by the exponential model 1 fr (y; 0) e u/0; 0 Suppose an isolated weather-reporting station has an electronic device whose time to failure is given by the exponential model 1 fr (y; 0) e u/0; 0 Suppose an isolated weather-reporting station has an electronic device whose time to failure is given by the exponential model 1 fr (y; 0) e u/0; 0