Intepretation of 2 Proportion Z-Test and P-Value

At a 5% significance level, we fail to reject that the probability of having a a higher stress level is caused by a part time job. Assuming that the null hypothesis is correct, the probability that the results of our experiment will occur is 16.6%, which is about 1 standard deviation below the mean. However, we did not take into account all the other factors that could lead to an increase in stress level among teenagers. Therefore, we cannot conclude that a high level of stress is a direct result of having a part time job.