A box contains 3 balls. Either
2 balls ar red and I ball is green,or 1 ball is red and 2 balls are green.one ball is taken at random from the box. Estimators S and T of the number of red balls in the box at the start are defined as below.
red ball taken greenball taken S 2 1
T 1.5 1.5
(i) what are the mean and variance for each of S and T?
(Remember to work with both of the possible initial numbers of ref balls)
(ii) which of S, T is the best estimator?
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Sorry I dont know
It is very easy I know it
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