LOOCV is not random because you fit all n possible models that leave out a single observation. k-fold CV is random because we randomly split the data into k chunks. How many models would we need to fit to exhaustively obtain MSP E for every excluded chunk of size n/k?

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?

The function f(x)= x5+ ( x + 3)2 is used to create a table. if x = -1 then what is f(x)?