For reference, here is the $\chi^2$ distribution table for degrees of freedom = 7:
p 1% 5% 95% 99% v=7 1.239 2.167 14.07 18.48
It means that 99% of the time $V \leq 18.48$, where $V$ is the chi-squared statistic. And 1% of the time we expect $V \leq 1.239$.
Can we combine these so that there is a range of expected values $1.239 < V \leq 18.48$ ?
And do we expect it to be outside this range 2% of the time?