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3 years ago

6

Which of the following is not a factor involved in the process of evaluating an observational study?

2 answers:

Alex_Xolod [135]3 years ago

8 0

Answer:

The answer is D, bias. If bias were a factor in an observational study(which it is not), then the study would be inaccurate due to someone's personal views affecting the results. Therefore bias is not a factor in the process of evaluating an observational study.

I don't know who verified the answer of the person why thought the answer was A, but they were incorrect.

bija089 [108]3 years ago

6 0

Results and Discussion are definitely very relevant for examining an observational study - they contain the core of the study, so they will definitely be considered when evaluated.
So we choose between "Bias" and "Introduction".

I think that the correct answer is "Introduction" -as it doesn't include any new information about the study, and only summarizes previous work.

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Lg(10x+200)=lg<br><img src="https://tex.z-dn.net/?f=%20%7Bx%7D%5E%7B2%7D%20" id="TexFormula1" title=" {x}^{2} " alt=" {x}^{2} "

Oksana_A [137]

Answer: x = {-4, 5}

<u>Step-by-step explanation:</u>

log (10x + 200) = log (x²) + log (10)

log (10x + 200) = log (10x²)

10x + 200 = 10x²

0 = 10x² - 10x - 200

0 = x² - x - 20

0 = (x - 5)(x + 4)

0 = x - 5 0 = x + 4

x = 5 x = -4

Check for extraneous solutions:

10x + 200 > 0 x² > 0

x = 5 10(5) + 200 > 0 (5)² > 0 both are satisfied

x = -4 10(-4) + 200 > 0 (-4)² > 0 both are satisfied

Both solutions are valid!

8 0

3 years ago

If there is a wall that is nine feet tall and eleven feet wide, how many eight-by-ten inch picture frames can I put up? (Note: T

soldier1979 [14.2K]

The number of picture frames he can put on the wall is 178 picture frames.

The wall is rectangular and it is 9 feet tall and 11 feet wide. let covert to inches.

9 feet = 108 inches

11 feet = 132 inches

<h3 /><h3>What is area:</h3>

The area is the space occupied by 2 dimensional figure. Let's find the area of the wall. Therefore,

area = lw

area = 108 × 132 = 14256 inches²

Therefore, let's find the area of the each picture frame. The frame is 8 inches by 10 inches.

area = 8 × 10 = 80 inches²

The number of picture you can put on the wall can be computed as follows:

14256 / 80 = 178.2

He can put 178 pictures on the wall.

learn more on area here: brainly.com/question/14442082?referrer=searchResults

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klasskru [66]

The answer is, "<span>B. Solve c + 7 = 2c − 13 to find the value of c."

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