The significance level determines how far out from the null hypothesis value we'll draw that line on the graph.
\(\)For the chi square distribution, the critical value at the significance level of 0.05 is at 3.84. Our chi square statistics for each reporting month is always higher than the critical value, so we can reject our null hypothesis that the ratio of customers riding over the weekend to weekday is the same or less than the ratio of subscribers riding on weekends over weekday.