Solve the below problem:
Q: Assume that the wavelengths of photosynthetically active radiations (PAR) are uniformly distributed at integer nano meters in the red spectrum from 675 to 700 nm.
(a) What are the mean and variance of the wavelength distribution for this radiation?
(b) If the wavelengths are uniformly distributed at integer nano meters from 75 to 100 nano meters, how do the mean and variance of the wavelength distribution compare to the previous part? Explain.