Answer:
I tried my best Answer listed below:
Explanation:
The primary limitation of economics, Chetty argues, is that economists have a limited ability to run controlled experiments for theoretical macroeconomic conclusions. The high monetary cost and ethical standards make these types of controlled experiments impractical.
The answer would be A and it’s a good explanation of the question
The number of protons in an element is the atomic number of the element, and it is not affected by the charge on the element. Hence, the species which has similar Number of proton is Fe²⁺
To know the species which the same number of protons as Fe³⁺, we need to obtain the <em>atomic number of the elements on the periodic table</em> :
- Fe³⁺, Atomic number = 26; Number of protons = 26
- Mn³⁺, Atomic number = 25; Number of protons = 25
- Co²⁺, Atomic number = 27; Number of protons = 27
- Fe²⁺, Atomic number = 26; Number of protons = 26
- Ni, Atomic number = 28; Number of protons = 28
Therefore, only Fe²⁺ has the same number of protons as Fe³⁺
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<h3>
Answer: D) 4</h3>
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Explanation:
The width of the confidence interval is 20-12 = 8 units. That cuts in half to get 8/2 = 4 which is the margin of error.
The center of the confidence interval is (12+20)/2 = 32/2 = 16. Add four onto this to get 16+4 = 20, which is the right endpoint. Subtract four from the center to get 16-4 = 12, which is the left endpoint.
Effectively, it's like saying "an archer aims for the value 16 on the number line, and the arrow could land as high as 20 or as low as 12".
The internet connection types that is being used is DSL (Digital Subscriber Line).
<h3>What is
DSL (Digital Subscriber Line)?</h3>
DSL is a type of broadband internet service that uses existing copper telephone wires to transmit data. DSL can provide high-speed internet access, typically ranging from 1 Mbps to 100 Mbps, depending on the distance from the service provider and the quality of the wiring. DSL can also allow users to make analog phone calls over the same line at the same time, because DSL uses a different frequency band than voice signals. DSL requires a special modem that can separate the data and voice signals and connect to the computer and the phone.
Some advantages of DSL are:
- It is always-on, meaning there is no need to dial up or wait for a connection.
- It is relatively inexpensive and widely available in urban and suburban areas.
- It does not interfere with the normal use of the telephone line.
Some disadvantages of DSL are:
- It is not available in some rural or remote areas, where the distance from the service provider is too far or the wiring is too old or damaged.
- It can be affected by environmental factors, such as noise, weather, or electrical interference.
- It can have variable speeds and performance, depending on the traffic and congestion on the network."
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