Entropy is a crucial idea in physics and chemistry, and it can also be used in fields like cosmology and economics. It is a component of thermodynamics in physics. It is a fundamental idea in physical chemistry, the study of chemistry.

Key Learnings: Entropy

Entropy is a metric for a system's unpredictability or disorder.

The mass of a system affects the value of entropy. It has units of joules per kelvin and is represented by the letter S.

The value of entropy can be either positive or negative. The entropy of a system can only go down if the entropy of another system goes up, according to the second law of thermodynamics.

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8 0

11 months ago

N a survey of twelve Harbor Business School graduates, the mean starting salary was $93,000, with a standard deviation of $17,00

scZoUnD [109]

Answer: The confidence interval would be (82198.71, 103801.28).

Explanation:

Since we have given that

Mean = $93,000

Standard deviation = $17,000

n = 12 < 30

So, we will use 't-test' to find the 95% confidence interval,

Here , $\alpha =1-0.095=0.05$

and $n-1=12-1=11$

So, according to t table, we get that

$t_{n-1,\frac{\alpha }{2}}=2.200985$

So, interval would be

$\bar{x}\pm t_{n-1,\frac{\alpha {2}}\dfrac{\sigma}{\sqrt{n}}\\\\=93000\pm 2.200985\times \dfrac{17000}{\sqrt{12}}\\\\=93000\pm 10801.2839\\\\=(93000-10801.2839,93000+10801.2839)\\\\=(82198.71,103801.28)$

Hence, the confidence interval would be (82198.71, 103801.28).

4 0

2 years ago

What was used to prevent African American men from voting in the late 1800s

Sedaia [141]

Poll taxes were used to prevent African American men from voting. Because many of the African American men were poor and could not pay the taxes they could not vote.

Literacy test or (understanding tests) where they were forced to read and explain the text to a white man.

5 0

2 years ago