a. What is the purpose of the study?b. Why do you think this study

a. What is the purpose of the study?

b. Why do you think this study is significant to adolescents? How has the amount of sleep hours affected your academic performance? 

c. Which domains (i.e., physical, cognitive, socio-emotional) are interacting in this study? Identify the key measures. 

d. According to the findings of the study, insufficient sleepers reported significantly greater daytime sleepiness (P<0.05). Explain ‘significance’ in relation to P<0.05. Do the best you can in understanding significance and p-values. This will help you tremendously in future analyses of articles.
e. Explain one of the highlighted numbers in Table 1 (p. 150) of the article. Is the number statistically significant?

I will upload the article as well as video as it may help u also 
PLEASE ANSWER ALL QUESTIONS AND DO THE RIGHT IN TEXT AND REFERENCE FOR APA AS WELL PLEASE 
THANK YOU