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Sedbober [7]
2 years ago
7

Are anesthetics safe? The National Halothane Study was a major investigation of the safety of anesthetics used in surgery. Recor

ds of over 850,000 operations performed in 34 major hospitals showed the following death rates for four common anesthetics:
Anesthetic A B C D
Death 1.7% 1.7% 3.4% 1.9%
There seems to be a dear association between the anesthetic used and the death rate of patients. Anesthetic C appears to be dangerous.
A) Select the best explanation for why we call the National Halothane Study an observational study rather than an experiment, even though it compared the results of using different anesthetics in actual surgery.
B) When the study looked at other variables that are confounded with a doctor's choice of anesthetic, it found that Anesthetic C was not causing extra deaths. Suggest several variables that are mixed up with what anesthetic a patient receives.
Mathematics
1 answer:
iVinArrow [24]2 years ago
7 0

Answer:

a) An experiment is conducted based on random observations not on certain selected observations.

b) age, blood type etc

Step-by-step explanation:

a) We call the National Halothane Study an observational study rather than an experiment, because the anesthetics  were not randomly chosen. They were prescribed by the doctors.

An experiment is conducted based on random observations not on certain selected observations.

b) There are factors such as age, sex, intensity , limit, tolerance and reactivity of the patient with the particular anesthetics chosen. If these are not carefully studied the results may not be as rewarding as desired.

If an anesthetics is chosen wihtou knowing the age or blood type for tolerance it may result in dangerous situations.

Some patients are highly tolerant with certain medications but others may die.

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frutty [35]

Answer: x=−2.15

Step-by-step explanation : Alright Let's solve your equation step-by-step.

0.5x−2=1.5x+0.15

Step 1: Subtract 1.5x from both sides.

0.5x−2−1.5x=1.5x+0.15−1.5x

−x−2=0.15

Step 2: Add 2 to both sides.

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Step 3: Divide both sides by -1.

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x=−2.15<em>        hope this helped!- Alex</em><u> </u>

8 0
3 years ago
A line with a slope of -4 passes through the point (0, 0). What is its equation in
Dahasolnce [82]

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4 0
3 years ago
Two people start from the same point. One walks east at 4 mi/h and the other walks northeast at 8 mi/h. How fast is the distance
kvasek [131]

Answer:

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Step-by-step explanation:

This problem can be solved by using different methods. I will use vectors since it's the simplest way in which we can solve it. This can be solved by using related rates of change though.

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Since there is no acceleration in the problem, we can suppose we are talking about constant speeds, so the velocity at which they are moving away from each other will always remain constant. (It doesn't matter what time it is, the velocity will always be the same)

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3 years ago
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3 years ago
Ppppppllease help meeeeee :)
nekit [7.7K]
I think is c because you just flipping the the letters and It should be the same answer ...but I’m not sure....
5 0
2 years ago
Read 2 more answers
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