i need to find the size of 2 samples based on this information
The population variance of the distribution for X is 100. 2 random samples of size n1 and n2 are repeatedly taken from the population. the sample means for sample size n1 and sample size n2 have the follwing distributions:
X ~ N(1,10)
X ~ N(1,2.5)
(X should be X with a bar over it)
any help please??