The spectrum from a hydrogen vapour lamp is measured and four lines in the visible light range are observed. these lines are the so-called balmer series, where an electron makes a transition from a higher level to the second energy level (n 2) from the measurements of the wavelengths of these four lines, four determinations of the rydberg constant r were made. these are: for ny 3, r 10.33 um1 11.52 um for n 4, r for ny 5, r 10.23 um for ny 6, r 9.36 um an average value of r can be found. calculate the uncertainty in this average r (use the mean error technique). express you answer in um to two decimal places. it is not necessary to specify the units