For the specified parameter there is no fitted parameter, so the null reference has $10-1=9$ <degrees of freedom>. The given deviance is $15.59$, below the supplied five-percent critical value $16.92$. Hence \b[do not reject the fixed log-series model at level five percent]. The parameter is fixed in this test, so subtracting an additional <degrees of freedom>[degree of freedom] would be inappropriate.

Solution

Past exam of the Probability, statistics and options II course of the University of Oxford / 2009 / O / O5 / i / Solution

 Solution (source code)