What is the difference between `lm(y ~ x*z)` and `(y ~ i(x*z))`, when x and z are both numeric variables?
1. the first one includes an interaction term between x and z, whereas the second uses the product of x and z as a predictor in the model.
2. the second one includes an interaction term between x and z, whereas the first uses the product of x and z as a predictor in the model.
3. the first includes only an interaction term for x and z, while the second includes both interaction effects and main effects.
4. the second includes only an interaction term for x and z, while the first includes both interaction effects and main effects.

the sum of the lengths of any two sides of a triangle is greater than the length of the third side. if you take the three sides of a triangle and add them in pairs, the sum is greater than (not equal to) the third side. if that is not true, then it is not possible to construct a triangle with the given side lengths.

step-by-step explanation:

ok so the answer to your question is simple as long as you look at the different dimensions that contain the exemplary letters that combined in the right order give you words that eventually within the 5th dimension will conform and give you the correct answer to your question. hope i , stop looking at this easily, look at it with a spectral view.

step-by-step explanation:

told you

what do u need to know

step-by-step explanation:

what is the rest of the question? ?