Does that mean you have calculated E(X) and Var(X)?View attachment 10436
the number of points issac scores for collecting treasures is Y
Y=100X-50
i have drawn a table and calculated E(X) and Var(X) of the original table
Calculate the mean and the standard deviation of Y
Well, what does your notes/eextbook have to szay about this?yes, so do i just sub in the value of var(x) for the standard deviation?
also i thought E(X) was already the mean