Hey guys, I am lost on how to calculate the sample mean/variance for this problem:
Plot the probability mass function of the sample mean of X1, ...,Xn, when
a) n = 2;
a) n = 3.
Assume that the probability mass function of the sample mean of X1,...,Xn is
P{X = 0} = .2, P{X = 1} = .3, P{X = 3} = .5
The answer in the back of the book is
E[sample mean] = 1.8
V[Sample mean] = 4.8/n
Any help is appreciated.
Plot the probability mass function of the sample mean of X1, ...,Xn, when
a) n = 2;
a) n = 3.
Assume that the probability mass function of the sample mean of X1,...,Xn is
P{X = 0} = .2, P{X = 1} = .3, P{X = 3} = .5
The answer in the back of the book is
E[sample mean] = 1.8
V[Sample mean] = 4.8/n
Any help is appreciated.