Assume you know the variance of X and Y (so you can use a standard normal table or z-table). Let X ={25, 29, 27, 28) and Y = {20, 19,21, 24}. What is the confidence level for the null hypothesis
that the mean of X is more than the mean of Y? Assume you know the variance of X and Y (so you can use a standard normal table or z-table). Let X ={25, 29, 27, 28) and Y = {20, 19,21, 24}. What is the confidence level for the null hypothesis
that the mean of X is more than the mean of Y? @Mathematics

Question

Assume you know the variance of X and Y (so you can use a standard normal table or z-table). Let X ={25, 29, 27, 28) and Y = {20, 19,21, 24}.  What is the confidence level for the null hypothesis
that the mean of X is more than the mean of Y? Assume you know the variance of X and Y (so you can use a standard normal table or z-table). Let X ={25, 29, 27, 28) and Y = {20, 19,21, 24}.  What is the confidence level for the null hypothesis
that the mean of X is more than the mean of Y? @Mathematics