I am struggling to interpret the Stata results. sleephrs is the number of hours of sleep and phoneusehrs is the number of hours spent on the phone.

Source SS df MS Number of obs 50 F (1, 48) = 59.06 Model 307. 822688 1 307.822688 Prob > F = 0.0000 Residual 250.197312 48 5.21244399 R-squared 0.5516 Adj R-squared = 0.5423 Total 558.02 49 11.3881633 Root MSE 2. 2831 sleephrs Coef. Std. Err. t P> t| [95% Conf. Interval] phoneusehrs - . 4841913 . 0630068 -7.68 0.000 -. 6108749 -.3575077 Cons 8.066113 . 4087417 19.73 0.000 7.244283 8.887943