Answer:
The Correct option is - d. all of the above.
Step-by-step explanation:
To find - In assessing the validity of any test of hypotheses, it is good practice to
a. examine the probability model that serves as a basis for the test by using exploratory data analysis on the data.
b. determine exactly how the study was conducted.
c. determine what assumptions the researchers made.
d. all of the above.
Proof -
All the Given options are correct to study the validity of a hypothesis test.
So,
The Correct option is - d. all of the above.
Answer:
COSAS
Step-by-step explanation:
en realidad hablo inglés XD
Answer:
Prat 9) 
Part 10) 
Part 11) 
Part 12) 
Step-by-step explanation:
we know that
If two figures are similar, then the ratio of its areas is equal to the scale factor squared
Let
SF-----> the scale factor
a----> area of the shaded figure
b----> area of the unshaded figure

Problem 9) we have


substitute in the formula


------> the scale factor
To find the value of x, multiply the length of the unshaded figure by the scale factor

Problem 10) we have


substitute in the formula


------> the scale factor
To find the value of x, multiply the length of the unshaded figure by the scale factor

Problem 11) we have


substitute in the formula


------> the scale factor
To find the value of x, multiply the length of the unshaded figure by the scale factor

Problem 12) we have


substitute in the formula


------> the scale factor
To find the value of x, divide the length of the shaded figure by the scale factor

Answer:
-3
Step-by-step explanation:
-2.5-0.5=3.0