the predict() function lets us apply the model to generate point and interval predictions. what is the interval estimate for a person (ok, frat boy) who has consumed 3, 4, or 5 beers?

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.

Ithink it’s c i’m not so sure but if i’m wrong i’m sorry