hi.plz help.
For a certain section of a pine forest,the number of diseased trees per acre,X has a Poisson distribution with mean lambda = 9.The diseased trees are sprayed with an insecticide of R2.00 per tree,plus a fixed overhead cost for eqiupment rental of R60.00.Letting Y denote the total spraying cost per acre,
a) Find the expected value and standard deviation
b)Within what interval would you expect Y to lie with probability at least 0.75?

Question

hi.plz help.
For a certain section of a pine forest,the number of diseased trees per acre,X has a Poisson distribution with mean lambda = 9.The diseased trees are sprayed with an insecticide of R2.00 per tree,plus a fixed overhead cost for eqiupment rental of R60.00.Letting Y denote the total spraying cost per acre,
a) Find the expected value and standard deviation
b)Within what interval would you expect Y to lie with probability at least 0.75?

anonymous · Answer

@Zarkon PLZ HELP