State the total degrees of freedom for the following t-tests. (if you need to use [infinity], enter infinity.)
(a) n = 21 for a one-independent sample t-test
(b) df1 = 13, n2 = 22 for a two-independent sample t-test
(c) critical value = 63.657 for a two-tailed test, α = 0.01
(d) critical value = 1.645 for a one-tailed test, α = 0.05

g(x) = x² + 2

step-by-step explanation:

it is given that the graphs are the same shape.

the only difference is that the red graph is 2 units higher than the blue graph.

that is to say that the red graph is simply the blue graph that has been moved vertically by 2 units in the positive y direction.

hence

g(x) = f(x) + 2

or

g(x) = x² + 2

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

idk

step-by-step explanation: