Plug-in estimates: Unbiased estimates are not transformationinvariant, Show that:
a.) In N(?, ?2), x?2 is not an unbiasedestimate of ?2
b.) In Exponential(?), e^(-x? ) is not an unbiased estimate of?.
c.) In Poisson(?), e^(-x? ) is not an unbiased estimate ofe^?.
d.) s is not an unbiased estimate of ?
