The sampling distribution of the sample mean is a distribution of all possible sample means that could be obtained from a given population.
In this case, you're considering random samples of 50 students from the population of all students in honors biology classes. The population distribution of completion times has a mean of 70 minutes and a standard deviation of 26.5 minutes.
The mean of the sampling distribution of the sample mean is equal to the mean of the population. Therefore, the mean of the sampling distribution of the sample mean is equal to the population mean (μ), which is 70 minutes in this case.
The standard deviation of the sampling distribution of the sample mean, also known as the standard error, is given by the population standard deviation divided by the square root of the sample size.
Hydrochlorofluorocarbons (HCFCs) are human-made chemicals that have been used as temporary replacements for chlorofluorocarbons (CFCs) in refrigerants because they decompose more readily in the atmosphere and thus pose less of a threat to Earth’s protective ozone layer. Levels of HCFCs have been measured in the stratosphere, and the concentrations of many different HCFCs have been steadily increasing since the mid- to late 1990s.
One important drawback of the use of HCFCs as a replacement for CFCs is that HCFCs:
a) biomagnify in food chains in the Arctic ecosystem
b) combine with water vapor to form acid precipitation
c) are greenhouse gases that contribute to climate change
d) react with carbon monoxide ( CO ) to form ozone in the troposphere
Answer:
c) are greenhouse gases that contribute to climate change
Explanation:
The CFCs and the HCFCs are fully and partially hydrogenated carbons and contains carbon and hydrogen and chlorine and fluoride and other volatile substance and being a component of the greenhouses gases like the methane. These contribute to climate change and the greenhouse effects on the earth and this is due to the government have phased put the use of CFCs and though this gas has a short lifespan.It should be noted that one drawback of the use of HCFCs as a replacement for CFCs is that HCFCs is C. are greenhouse gases that contribute to climate change
It should be noted that CFCs and HCFCs contain carbon, hydrogen, chlorine, fluoride and other volatile substance and are a component of the greenhouses gases like methane.
They contribute to climate change and the greenhouse effects on the earth. This illustrates the drawback of the use of HCFCs as a replacement for CFCs.
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Select the correct answer.
A piece of physical evidence is fused with sodium metal to form a solution. A deep yellow precipitate is obtained when nitric acid and silver nitrate is added to the solution. Which element does the physical evidence contain?
A.
carbon
B.
nitrogen
C.
iodine
D.
oxygen
Answer:
a
Explanation:
A
Explain how the Fed's refusal to lower interest rates may affect the President's
popularity.
The refusal of Fed would lead to increase in job creation and growth leading to increase in popularity of the president.
Explanation:
The federal reserve refused to increase the rate of interest which led to the increase in the creation of the jobs and more employment opportunities for the people of the economy.
This would lead to the increase in the growth and the development of the country and the economy. Thus there would be increase in the popularity of the President because during that tenure the economy is seeing growth and development.
Which statement is true about forests
Answer:
I think it would be a C forests are important and local and global economies not sure tho but pretty confident
Explanation:
I haven’t submitted it yet but it’s the only one that really does make sense because everything else contradicts the other questions
2 Points
Which of the following is not a type of company that a socially responsible
investor would support?
O
A. A company that attempts to provide fair wages and good working
conditions to its employees
O
B. A company that does more to protect the environment than the
government requires
O
C. A company that puts profit-maximization above all other
considerations
O
D. A company that uses only sustainable natural resources
SUBMIT
Answer:
C
Explanation:
A company that a socially responsible investor would not support is A company that puts profit maximization above all other considerations. Thus the correct option is C.
What is a socially responsible investor?
A socially responsible investor is referred to investors which put their finances into a business or organization which work for the welfare of society or work in a manner through which society gains an advantage.
Companies that aim to maximize profit will ignore the benefits to society they aim to the fact that they can receive maximum profit through any method.
In this type of Socially responsible investor never support as it ignores or avoids the policy which this type of investor focuses on. They support organization that focuses on the protection of the environment and provide fair wages and proper working conditions.
Therefore, option C is appropriate.
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A victim has been shot in their car. Investigators perform a Greiss test around the bullet holes. What are investigators most likely hoping to learn from this test?
The exact time the bullets were fired
The caliber of the gun used
How far away the bullets were fired
The size of the bullets fired
Answer:
How far away the bullets were fired
Explanation:
Greiss test is a chemical test common with a crime scene and it is used to detect gunpowder residues that are very minute and hard to find.
The gun residues offers information about the distance of the shooter from the victim.
It determines if the crime was suicidal or not and if the crime occurred as a result of self defense.
Natural selection is an evolutionary mechanism by which _________.
A)
advantageous traits are eliminated in a population
B)
organisms adapt to climatic changes
C)
inherited traits pass consistently through generations
D)
organisms choose which traits to look for in their offspring
E)
advantageous traits become more common in a population
Fourteen Colorado counties were surveyed to see what percentage of children under 18 were living with their grandparents. The results are shown here. What is the interquartile range of the data? A) 1.425 B) 1.875 C) 2.125 D) 2.375
Answer:
The answer is A
1.4
What is Walter trying to say when he refers to African Americans as "the world's most backward race of people"? Does he seriously believe this?
Walter's statement about African Americans being "the world's most backward race" does not reflect his true beliefs but underscores the historical prejudices and systemic challenges faced by African Americans. Leaders like Du Bois and Garvey rejected such stereotypes, emphasizing strength, self-respect, and potential within the Black community.
Explanation:When Walter refers to African Americans as "the world's most backward race of people," it seems he is expressing a sentiment that aligns with a problematic stereotype stemming from historical prejudice and systemic disenfranchisement. However, given the context provided, Walter does not actually believe this; rather, it appears to be a critique of the systemic issues that have unjustly characterized African Americans this way. Figures like W. E. B. Du Bois and others sought to challenge such notions by advocating for the acknowledgment of the real socio-economic obstacles African Americans faced and the unjust prejudices that contributed to such a disparaging view.
The content quotes highlight the complexities and different perspectives within the African American community regarding their status and path forward. Du Bois and Garvey, among others, emphasized the importance of self-respect, self-help, and the rejection of submission to the dominant culture's devaluation of Black people. The critical perspective extends to challenge the distortion of facts and the role of stereotypes in perpetuating systemic racism. They argue for a recognition of the collective strength and potential of Black people to rise above the obstacles and prejudices placed in their way. Therefore, such a statement is not a genuine belief but a reflection of the deep-rooted societal issues that figures like Du Bois were seeking to address and overcome. It's a portrayal of the external view forced upon African Americans, not an expression of internal self-perception or an endorsement of that erroneous and harmful stereotype.
Two lights will be arranged on a two-dimensional plane. The vertical distance between the two lights is stored in the double variable a. The
horizontal distance between the two lights is stored in the double variable b.
The straight-line distance between the two lights is given by the formula
ſa² +b²
Write a code segment that prints the straight-line distance between the two lights according to the formula above.
Answer:
double a;
double b;
double distance = Math.sqrt( (Math.pow(a, 2) + Math.pow(b, 2));
System.out.println("The distance is: " + distance);
Explanation:
The code snippet is written in Java.
First, variable a is declared as a type of double and variable b is also declared as a type of double.
The given formula for the distance is:
√(a² + b²)
So we use the inbuilt function of Java to calculate the power and the square root.
Math.sqrt is to find the square root and it returns a value of type double.
Math.pow is use to calculate the value of a² and b².
a² = Math.pow(a, 2)
b² = Math.pow(b, 2)
Then Math.sqrt is applied to the sum of Math.pow(a, 2) and Math.pow(b, 2), the value is assigned to distance of type double.
The value of distance is now displayed to the user:
System.out.println("The distance is: " + distance);
A large university offers STEM (science, technology, engineering, and mathematics) internships to women in STEM majors at the university. A woman must be 20 years or older to meet the age requirement for the internships. The table shows the probability distribution of the ages of the women in STEM majors at the university.
(a) Suppose one woman is selected at random from the women in STEM majors at the university. What is the probability that the woman selected will not meet the age requirement for the internships?
The university will select a sample of 100 women in STEM majors to participate in a focus group about the internships.
(b) Suppose a simple random sampling process is used to select the sample of 100 women. What is the probability that at least 30 percent of the women in the sample will not meet the age requirement for the internships?
(c) Suppose a stratified random sampling design is used to select a sample of 30 women who do not meet the age requirement and a sample of 70 women who do meet the age requirement. Based on the probability distribution, is a woman who does not meet the age requirement more likely, less likely, or equally likely to be selected with a stratified random sample than with a simple random sample? Justify your answer
The following are used to calculate the requirement.
Explanation:
In the simple random sample, probability that at least 30 percent of women in the sample will not meet the age requirement is 0.0322.
In stratified random sampling, proportion of women who does not meet the age requirement is = 30 by 100 = 0.30
Standard error of proportion, Cp = Vp ( 1 minus p) by n = V 0.3 (1 minus 0.3) by 100 = 0.0458
Standard error of proportion = 0.0458
Thus, the probability that at least 30 percent of women in the sample will not meet the age requirement is higher for stratified random sampling.
So, a woman who does not meet age requirement is more likely to be selected with a stratified random sample than with a simple random sample.
2) Explain in 2-4 sentences the situation of Orlando, Florida that allows it to grow economically and be a part
of globalization with connections to people all around the world.
Explanation:
There are several important factors for the economic growth and globalisation of Orlando Florida,
The first is the medical facilities in Orlando. Orlando offers one of the best medical facilities in United States and many patients visit this place just to get medical treatment.
The second aspect is the number of visitors that Orlando attracts throughout the year
Also Orlando has seen the highest job growth for 2015 till 2018 for any other US state and most of the fortune 500 companies have their operations in Orlando
The deep ocean floor communities contain very little life. In constant darkness, the water at these depths hovers around 2°C . Sparsely distributed in this environment are hydrothermal vent ecosystems. Superheated water streams out of the vents at temperatures approaching 400°C . These waters are rich in inorganic materials, including carbon dioxide and hydrogen sulfide. Hydrothermal vent zones have a density of organisms 10,000 to 100,000 times greater than found on the surrounding seafloor.
Scientists have studied these vents to determine the energy source for these communities and the identity of the primary producers in the perpetual darkness of the ocean floor. As expected, they found a total absence of photosynthetic organisms at all vents, identifying mats of bacteria as the producers of the carbon compounds that are used by the rest of the community for growth, repair, and as an energy source.
Which of the following describes how the vent bacteria harvest energy to produce organic compounds for use by the vent community?
The bacteria use the heat from the hot water to assemble carbon-based materials from inorganic molecules.
A
The bacteria function as chemoautotrophs, extracting energy from hydrogen-rich inorganic molecules.
B
Organic matter drifting down from the ocean’s surface is used to make molecules with enough energy to sustain the vent community.
C
The bacteria can recycle the energy from the waste products and dead material produced by the heterotrophs of the vent community into energy-rich carbon compounds that can be recycled.
D
Answer: B. The bacteria function as chemoautotrophs, extracting energy from hydrogen-rich inorganic molecules.
Explanation: The bacteria use the energy stored in hydrogen sulfide to produce carbon compounds that are used by the heterotrophs in the community. This process is known as chemosynthesis.
The option that describes how the vent bacteria harvest energy to produce organic compounds for use by the vent community is B. The bacteria function as chemoautotrophs, extracting energy from hydrogen-rich inorganic molecules.
From the information given, the waters are rich in inorganic materials, including carbon dioxide and hydrogen sulfide.
Therefore, the vent bacteria can harvest energy to produce organic compounds for use by the vent community. This can be done by extracting energy from hydrogen-rich inorganic molecules.
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how do domestic policies affect international trade?
Explanation:
Production and consumption taxes and subsidies can stimulate imports or exports to occur. In other words, domestic policies can cause international trade. Domestic production and consumption taxes and subsidies will affect the level of international trade with the rest of the world.
Hope it will help.
In the piece above, what did the artist create through the use of arbitrary colors and unrefined brushwork?
a a sense of discomfort
b. a sense of drama
C a sense of dissonance
Answer:
A. a sense of discomfort
Explanation:
right on edg:))
A sense of discomfort is created through the use of arbitrary colors and unrefined brushwork. Therefore, option A is correct.
What are arbitrary colors?Random color refers to a color selection in an artwork that has no connection to the object being depicted's realistic look (think purple cows, yellow sky, pink sun, etc.). Many painters select the colors for their paintings with the goal of capturing the subject's appearance as realistically as possible.
The entrance of the random color trend into European art may be seen in works like Gauguin's painting "The Vision After the Sermon," which reflects the influence of Japanese art like that of Hokusai.
Thus, a sense of discomfort is created through the use of arbitrary colors and unrefined brushwork. Therefore, option A is correct.
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Which technological innovation allowed the Mughal Empire to rule
and expand for a few centuries?
Answer:
They innovated with two canals, Nahr Faiz and Shah Nahr.
Explanation:
The diffusion of the Industrial Revolution across Europe was most affected by
dependence on coal for energy.
construction of the railroads.
the arrival of canned foods.
high demand for new construction.
the end of cottage industries.
Answer:
Construction of railroads
Explanation:
It's talking about diffusion so railroads are the only option I see that can actually diffuse, or spread, things
Are you likely to be more successful in your career and social relationships if you have a high IQ? Explain.