find the answer for (a)

A paper explores the relationships between age and several measures of mental health and well-being. Based on a large sample of people, the data in the accompanying table are the percentages reporting that they get less than 7 hours of sleep per night by age group. Age Group | Representative Age ee Pee ea 20 to 29 25 9 30 to 39 35 12 40 to 49 45 12 50 to 59 55 11 60 to 69 65 4 PASO 7.1 (a) Find the equation of the least squares regression line that describes the relationship y = Percent reporting less than 7 hours of sleep and x = Representative age. p=