Answer:
1) b. an experimental study
2) a. μ1=μ2=μ3
3) a. MSE
4) MSTR =85.735
5) value of the F-statistics =7.472
6) b. 0.004
7) a. We reject the null hypothesis
8) b. Yes
Step-by-step explanation:
See the attached image
Your formula for this is
![9^{2} =x(24+x)](https://tex.z-dn.net/?f=%209%5E%7B2%7D%20%3Dx%2824%2Bx%29)
and
![81=24x+ x^{2}](https://tex.z-dn.net/?f=81%3D24x%2B%20x%5E%7B2%7D%20)
. Get everything on one side of the equals sign, set it equal to 0 and factor. When you do this you get (x-3)(x+27). The Zero Product Property rule tells us that either x-3 = 0 or x+27 = 0 and that x = 3 and -27. The only thing in math that will NEVER be negative besides time is distance/length, therefore, x cannot be 27 and has to be 3.
Answer:
47.1
Step-by-step explanation:
Sorry if its wrong
the key is to write
as
which can be easily seen as an area of a rectangle with one side length n and the other (n+1). That explains the rectangle made of dots - 3 x 4
Now you only have half of them because of the 1/2. So that explains the lower "triangle" of dots being greyed out - they do not count in the area (upper triangle). So the count of the dark dots corresponds to the original expression.
For n=5 you can draw a similar rectangular matrix with 5 x 6 dots. And count only the upper triangular part.