What stable method was introduced in the class in order to compare predictive quality of different models? Proceed to use this method & obtain test error estimates of all 3 × 3 = 9 models. Which model (the combination of K & predictor subset) won?

it is c, trust i got your back lol

step-by-step explanation:

given : the shape of his satellite can be modeled by   where x and y are modeled in inches.

now,the given equation   is a equation of parabola.

here, coefficient of x is positive, hence the parabola opens rightwards.

on comparing this equation with standard equation , we get

in standard equation, coordinates of focus=(0,m)

thus for given equation coordinates of focus=(0,1.5)

step-by-step explanation: