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ser-zykov [4K]
4 years ago
12

The essential difference between an experiment and an observational study is that:

Mathematics
1 answer:
Mars2501 [29]4 years ago
8 0

Answer: e. An experiment imposes treatments on the subjects, but an observational study does not.

Step-by-step explanation:

Experiment is scientific procedure that is undertaken by an individual or a researcher in order for the person to either make a discovery, or test a hypothesis.

Observational studies are the studies whereby the researchers just observe the impact of a treatment or risk factor e.g. cohort studies. In observational study, the researchers just collect data based on what they've either heard or seen and they've no control over such variables collected whole for an experiment, treatments are applied to a group and the effects are recorded.

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Translate the percent word problem in a equation: If 5 is increased to 8, the increase is what percent of the original number?
-Dominant- [34]
If you increased 5 to 10, then I would have doubled the number 5 and this is a 100% increases.
If you increased 5 to 7.5, then this is 50% increase, because 50% of 5 is 2.5 and 5 + 2.5 = 7.5
If you increased 5 to 6, then this is a 20% increase,because 5 + 1 = 6 and 1 is 20% of 5
If you increased 5 to 7, then this is a 40% increase,because 5 increased by 2, 5 + 2 = 7, and 2/5 = 40%
If you increased 5 to x, then 5 was increased by x/5×100%
For example 5 to 9 is a4/5×100%=80% increase

So here 5 increases by 8, 5 + 3 = 8, thus the percentage increase is3/5×100%=0.006
8 0
3 years ago
Read 2 more answers
In parallelogram GHJK if m KGH=25° find mJKG.
amm1812

Answer:

x = 155°

Step-by-step explanation:

Adjacent angles of a parallelogram are supplemenary angles . Supplemwntary angles are the angles whose sum is 180°. So,

KGH + JKG = 180°

=> 25° + x° = 180°

=> x = 180 - 25 = 155°

5 0
3 years ago
Terry is making 2 hats and scarf sets.Each scarf requires 3 yards of material and each hat requires 24 inches of material. How m
Nadusha1986 [10]
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3 0
4 years ago
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Find the volume of the solid shown or described. If necessary round to the nearest tenth. What is the volume of the shed?
S_A_V [24]

Answer:

Volume of shed = 38 m³

Step-by-step explanation:

Given:

Length = 5 m

Width = 2 m

Height of wall = 3 m

Height of triangular shed = 1.6 m

Find:

Volume of shed

Computation:

Volume of shed = Volume of walls + Volume of triangular shed

Volume of shed = [lbh] + [1/2][Base area]h

Volume of shed = [(5)(2)(3)] + [1/2][(5)(2)]1.6

Volume of shed = [30] + [8]

Volume of shed = 38 m³

6 0
4 years ago
HELP HELP ASAPP!!!! PLS
ira [324]

Answer:

D)  reflection followed by a dilation

Step-by-step explanation:

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3 years ago
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