When you use R to perform any analyses to answer questions in the Exam, please providethe R output (statistical output or graphs) as a part of your answer. If not explicitly indicated in the problem, assume significance level (?) of 0.05

7. [Total: 3 pts] Lack of sleep is known to be linked to high blood pressure and heart disease. The research question is \"Does increasing sleep duration from 7 to 8 hours per night significantly change the average systolic blood pressure in hypertensive subjects?\" The data from a pilot study showed that the 95% confidence interval of the mean change in systolic blood pressure is [-5, 1] mmHg. Based on the given information, what is your conclusion? Explain your