## Elementary Statistics (12th Edition)

k=35, z=1.645, hence using the given formula: $X^2=0.5(z+\sqrt{2k-1})^2=0.5(1.645+\sqrt{2\cdot35-1})^2=22.189.$ Hence we can see that this value is really close to the value we got by using STATDISK and Minitab.