Runs test for AQI signs

The recorded air quality index (AQI) at a place in a city for $16$ consecutive days for the current year is compared with the historical average AQI. The direction of the recorded AQI is noted as '$+$' if it is above the historical average and as '$-$' if it is below the historical average. The dataset is as below: $$+\,+\,-\,+\,-\,-\,+\,+\,+\,+\,-\,-\,-\,+\,+\,-$$ The total number of runs, $R$, is being used to test $H_{0}$: The direction of the recorded AQI is random against $H_{1}$: The direction of the recorded AQI is not random. Consider the following statements. $P$: The observed value of total number of runs is $8$. $Q$: Based on the above dataset, $H_{0}$ is rejected in favor of $H_{1}$ at level $0.05$. Then which one of the following is true? [You may use: Under $H_{0}$, with $7$ negative signs and $9$ positive signs, $P(R\le 6)=0.108$, $P(R\le 7)=0.231$, $P(R\le 8)=0.427$]