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lilavasa [31]
3 years ago
13

A scientist collected data in 10 trials comparing tired students' and awake students' test scores. Trial Tired Average Score Awa

ke Average Score 1 34% 67% 2 56% 88% 3 60% 90% 4 58% 86% Which trial was the least precise and is unlikely to be reproducible?
Physics
2 answers:
RSB [31]3 years ago
8 0

Scores of trial 2,3 are more accurate while trail 1 is the least precise as well as un-reproducible.

Explanation:

The second rating is really similar to the first since Score 1 is 34 points, 64 points.

They measure the average as 34 + 67/2 = 50.5

Deviations from the defined values are determined as follows:

50.5-34 = 16.5 & 50.5-67 = -16.5

Then the total variance is = (16.5 + -16.5)/2 = 0.00

Calculating Rating 2 by the provided values: 56 percent, 88 percent.

We measure an average of 56 + 88/2 = 72.

Deviations from the specified values are determined as follows: 72-56 = 16, 72-88 =-16.

The maximum variations here are 0.00.

Calculation of Score 3 by the specified values: 60 percent, 90 percent.

Similarly, we will consider the Median as 60 + 90/2 = 75.

Deviations from this are 75-60 = 15, 75-90 = -15.

The maximum variations here are 0.00.

The assigned Score 4 is 58 per cent, 86 per cent and its average is 72 and its deviation is-14, while its average deviation is 0.

Result: Trail 1 has a high divergence, so it is less reliable.

lesantik [10]3 years ago
7 0

Answer:the answer is A- trail 1!

Explanation:have a great day and goodluck! :)

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when an element tends to lose its valence electrons in chemical reactions , does it behave more like a metal or nonmetal
Juli2301 [7.4K]

It behaves more like a metal

Explanation:

When an element tends to lose its valence electrons in chemical reactions, they behave more like a metal.

Metals are electropositive.

Electropositivity or metallicity is the a measure of the tendency of atoms of an element to lose electrons.

This is closely related to ionization energy and the electronegativity of the element.

  • The lower the ionization energy of an element, the more electropositive or metallic the element is .

Metals are usually large size and prefers to be in reactions where they can easily lose their valence electrons.

When most metals lose their valence electrons, they attain stability.

Non-metals are electronegative. They prefer to gain electrons.

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4 0
4 years ago
Rank the pressures from highest to lowest:
n200080 [17]

Answer:

P₃ > P₁ > P₂

Explanation:

To rank pressure of the given situation

a) we know

  Pressure at height h below

      P = ρ g h

density of salt water, ρ = 1029 kg/m³

      P₁ = 1029 x 10 x 0.2

      P₁ = 2058 Pa

b) density of fresh water, ρ = 1000 kg/m³

      P₂ = 1000 x 10 x 0.2

      P₂ = 2000 Pa

c) density of mercury, ρ = 13593 kg/m³

      P₃ = 13593 x 10 x 0.05

      P₃ = 6796.5 Pa

Rank of Pressures from highest to lowest

        P₃ > P₁ > P₂

3 0
3 years ago
Fill in the blanks
just olya [345]

Answer:

An atom that loses a electron is called a cation and has an overall positive charge.

4 0
4 years ago
Kinetic energy during an object falling
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Answer:

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6 0
3 years ago
Teresa saw a large star outside of her window at ten o'clock last night.
nordsb [41]

Answer: The answer is C, Yes, her star will have appeared to move very slightly to the west.

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5 0
4 years ago
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