Question: Errors of fitparameters

I want to fit a function to data which I did with the fit command

f := Fit(1+a*n^b, X, Y, n, output = [leastsquaresfunction])

btw: the output standarderrors does not work...

it produces the error:

Error, (in Statistics:-Fit) values for these items are not available: ["standarderrors"]

Now maple just returns the least square parameters but without errors.

How can I get the errors for the parameters?

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