Answer:
A. Because the sample size is very large.
Step-by-step explanation:
The sample is quite large, so the t test is safe. With a sample size of at least 100, this test is going to be safe.
So the correct answer is:
A. Because the sample size is very large.
Answer:
Number 200 decreased by 10% (10 percent) of its value (percentage decrease) and calculated absolute change (actual difference). Answer: percentage decreased number = 180, absolute change (actual difference) = -20
Step-by-step explanation:
Answer:
305.12 square inches
Step-by-step explanation:
The picture of the question in the attached figure
we know that
The area of the window is equal to the area of a rectangle, plus the area of two quarter circles plus the area of the smaller square between the two upper corners
so
Find the area of rectangle

Find the area of the two quarter circle
![A=2[\frac{1}{4}(3.14)(4^2)]](https://tex.z-dn.net/?f=A%3D2%5B%5Cfrac%7B1%7D%7B4%7D%283.14%29%284%5E2%29%5D)

Find the area of the smaller square between the two upper corners

The total area is equal to

Answer:
b
Step-by-step explanation:
8
Answer: c
Step-by-step explanation: