Which would explain why there is a growing trend of obesity in kids Aged 2-19

Mathematics

There has been a trend toward less driving in the last few years, especially by young people. from 2001 to 2009 the annual vehicle miles traveled by people from 16 to 34 years of age decreased from 10,300 to 7900 miles per person (u.s. pirg and education fund website, april 6, 2012). assume the standard deviation was 2000 miles in 2009. suppose you would like to conduct a survey to develop a 95% confidence interval estimate of the annual vehicle-miles per person for people 16 to 34 years of age at the current time. a margin of error of 100 miles

Step-by-step answer

P Answered by PhD

1

1537.

Step-by-step explanation:

Formula for sample size :-

$n=(\dfrac{z_{\alpha/2}\cdot \sigma}{E})^2$

Given : $\sigma=2000$

Margin of error : E= 100

Critical value of 95% confidence : $z_{\alpha/2}=1.96$

Now, the required sample size will be :-

$n=(\dfrac{1.96\cdot 2000}{100})^2\\\\=1536.64\approx1537$

Hence, the minimum sample size required = 1537.

Mathematics

There has been a trend toward less driving in the last few years, especially by young people. From 2001 to 2009, the annual vehicle miles traveled by people decreased. Assume the standard deviation was 2000 miles in 2009. Suppose you would like to conduct a survey to develop a 90% confidence interval of the annual vehicle-miles per person for people. A margin of error of 100 miles is desired. How large of a sample should be used for the survey?

Step-by-step answer

P Answered by PhD

The sample size is used for the survey (n) = 1082

Step-by-step explanation:

Explanation:-

Step(i):-

Given data There has been a trend toward less driving in the last few years, especially by young people. From 2001 to 2009

Assume the standard deviation was 2000 miles in 2009

Given the Population standard deviation 'σ' = 2000 miles

Given the margin of error at 90% of confidence interval

Margin of error = 100 miles

The z- score value at 90% of confidence interval = 1.645

Step(ii):-

The Margin of error is determined by

$M.E = \frac{Z_{\alpha }S.D }{\sqrt{n} }$

$M.E X \sqrt{n} = Z_{\alpha } S.D$

Now the sample size $\sqrt{n} = \frac{Z_{\alpha } S.D}{Marginerror} = \frac{1.645 X 2000}{100}$

√n = 32.9

squaring on both sides , we get ' n ' = 1082.41

Final -

The sample size is used for the survey (n) = 1082

Mathematics

There has been a trend toward less driving in the last few years, especially by young people. from 2001 to 2009 the annual vehicle miles traveled by people from 16 to 34 years of age decreased from 10,300 to 7900 miles per person (u.s. pirg and education fund website, april 6, 2012). assume the standard deviation was 2000 miles in 2009. suppose you would like to conduct a survey to develop a 95% confidence interval estimate of the annual vehicle-miles per person for people 16 to 34 years of age at the current time. a margin of error of 100 miles

Step-by-step answer

P Answered by PhD

1

1537.

Step-by-step explanation:

Formula for sample size :-

$n=(\dfrac{z_{\alpha/2}\cdot \sigma}{E})^2$

Given : $\sigma=2000$

Margin of error : E= 100

Critical value of 95% confidence : $z_{\alpha/2}=1.96$

Now, the required sample size will be :-

$n=(\dfrac{1.96\cdot 2000}{100})^2\\\\=1536.64\approx1537$

Hence, the minimum sample size required = 1537.

Chemistry

PLEASE HELP THEY ARE EASY QUESTIONS THERE ARE JUST A LOT Please answer these. The tables needed for question 7 are in the picture. I got rid of some of the questions that you wouldn’t be able to answer without doing the lesson Question 1: Electron Notation Example (2 points) a. Give the electron configuration of vanadium (V), atomic number 23. (0.5 points) b. Give the noble gas configuration of vanadium (V), atomic number 23. (0.5 points) c. List the energy levels for the orbital configuration of vanadium (V), atomic number 23. (1 point) Question

Step-by-step answer

P Answered by Specialist

5

some of the answers are in order below.

Explanation:

1s2 2s2 2p6 3s2 3p6 4s2 3d3

(Ar) 4s2 3d3

n=1 is the first energy level: 1s2

n=2 is the second energy level 2s2 3p6

n=3 is the third energy level 3s2 3p6 3d3

n=4 is the fourth energy level: 4s2

First ionization decreases going down the periodic table. But it increases going across the periodic table (left to right)

Electronegativity increases going across the periodic table (from left to right), and it decreases going down the periodic table.

Atomic radius increases going down the periodic table (more energy levels) and decreases going across (larger number of protons pull electrons closer to the nucleus)

A. Ionic bond_B_ Sharing of electrons

B. Covalent bond_C Freely moving electrons

C. Metallic bond_A_ Transfer of electrons

A dipole –dipole forces are occurring between positive end of one polar molecule and a negative end of another polar molecule.

Hydrogen bonding is when hydrogen atom bonded to oxygen, nitrogen or fluoride is attracted to another oxygen, nitrogen or fluoride atom.

Van der Waals forces are intermolecular forces that form because there is fluctuation within an electric cloud, with more electrons on one side of an atom then the other causing slight polarity in nonpolar molecules.

The cell membranes are non-polar lipids, and polar molecules cannot pass through it easily. Some small polar molecules (medicine) can diffuse through the lipid layer easily but larger cannot. (research more)

The strongest bond is H –H bond. The weakest is I-I bond.

These are the measures of average bond energies of the most common bonds present.

S can bond with I and N in many different bond energies.

Triple bond has the highest bonding energy and it is the strongest bond, then double and the weakest is single bond.

etc etc..

English

Business Successi will give brainleset for the whole thing done Restaurant owners are continually monitoring financial aspects and customer relations of their business. They use collected data to recognize trends, predict outcomes, and plan for the future. In this task, you will play the role of a restaurant owner. You will collect data and analyze different aspects of your business. As you complete the task, keep these questions in mind: Can you predict sales based on factors such as the weather and the number of customers? Can you estimate the

Step-by-step answer

P Answered by Master

1

Explanation: this should be it holmes

Business Successi will give brainleset for the whole thing done

Restaurant owners are continually

Mathematics

100 points You keep track of the daily hot chocolate sales and the outside temperature each day. The data you gathered is shown in the data table below. Hot Chocolate Sales and Outside Temperatures Sales ($) $100 $213 $830 $679 $209 $189 $1,110 $456 $422 $235 $199 Temperature (°F) 92° 88° 54° 62° 85° 16° 52° 65° 68° 89° 91° a) Make a scatterplot of the data above. b) Do you notice clusters or outliers in the data? Explain your reasoning. c) How would you describe the correlation in the data? Explain your reasoning. d) What are the independent and

Step-by-step answer

P Answered by Master

18

(A) The scatter plot is attached below.

(B) The outlier is at (189, 16°F).

(C) There is a negative correlation.

(D) The dependent variable is sales and independent variable is the temperature.

Step-by-step explanation:

The data provided for Hot chocolate sales and outside temperatures is as follows:

Sales (Y) Temperature (X)

100 92

213 88

830 54

679 62

209 85

189 16

1110 52

456 65

422 68

235 89

199 91

(A)

The scatter plot is attached below.

(B)

A cluster is a collection of points or values at one place.

On the scatter plot there is a cluster of three values between the temperatures 80°F to 100°F.

An outlier is a value that is very different from the other values in a data set. It is either too small or too large.

There is an outlier present in the provided data set.

The outlier is at (189, 16°F).

(C)

The point on the scatter plot are downwards sloping.

This implies that there is a negative relationship between the variables temperature and sales.

Thus, there is a negative correlation.

(D)

Dependent variables are those variables that are under study, i.e. they are being observed for any changes when the other variables in the model are changed.

Independent variables are the variables that are being altered to see a proportionate change in the dependent variable.

In this case the data represents the sales of hot chocolate according to the temperature outside.

So, the dependent variable is sales and independent variable is the temperature.

This is because as the temperature decreases the sales of hot chocolate increases.

English

Based on the context, which three phrases show the shift from an informative tone to a judgmental tone? Journalism: A Service or a Business? Journalism, the profession of reporting or delivering news and information to the public, is the fourth pillar of a democratic state—the other three being judiciary, executive and legislative. This service is given immense importance because it plays a crucial role in society. From informing people to entertaining them with interesting stories, this field covers every issue, topic, or event under the sun.

Step-by-step answer

P Answered by PhD

4

This universal trend has become a vicious cycle, where the demand for sensational news articles trumps the genuine need for credible information. Journalism, like many other services, has become commercialized and, under the disguise of reporting and exposing misdeeds, it is shamelessly being sold. Additionally, falsified and unverified news reports further disrespect the profession.

Explanation:

The above article aims to inform the role of journalism within our society and how the journalist is charged with helping and ensuring that journalism fulfills its function. However, the article shows that over the years, journalism has become something sold, weak and demoralized due to the content of information that people are interested in, which directly reflect on the seriousness of this industry. The phrases shown above, show the moment when the article is no longer informative and starts to make a harsh criticism about how journalism is being established today.

English

While the volunteer rates of teenagers remained quite low in 1974 and 1989, we find that volunteering rates for individuals aged 16 to 19 actually doubled between 1989 and [2005] — to a rate that exceeds the national volunteer rate …. Increased enthusiasm for volunteering among today’s young people is reflected in other research as well. For example, the Higher Education Research Institute’s (HERI) found an all-time high in the percentage of first-year college students who indicated that there was a high probability that they would volunteer or

Step-by-step answer

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7

"... the Higher Education Research Institute’s (HERI) found an all-time high in the percentage of first-year college students who indicated that there was a high probability that they would volunteer or participate in community service sometime during their college careers."

"... University of Michigan’s Monitoring the Future study also finds a rising trend in volunteering among teens."

Explanation:

The two details of the article shown above, can support the argument of requiring a hundred hours of community service to graduate from high school. This is because these details show that the requirement of volunteering work in secondary education influences young people to participate in voluntary activities again and this is a good thing for society, since volunteer work is able to help the State to solve some social problems.

In short, the requirement of 100 hours of community service to graduate from high school, trains young people willing to help society.

Biology

1. which of the following is true of a population that is evolving by means of natural selection? (1 point) a.)acquired characteristics are passed down from parent to offspring. b.)organisms best adapted to their environment have the highest fitness. c.)allele frequencies of all mutations are continuously increasing. d.)alleles become more or less common in the population through a series of chance occurrences. 2. which of the following explains the relationship between alleles and natural selection? (1 point) a.) alleles control an organism’s

Step-by-step answer

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136

1. Natural selection is the process in which organisms who have the ability to survive more in the environment are favored than the other ones. In this type of evolution, the ones who do not adapt well with the environment gradually die off and the one with the best traits are left standing. Among the choices, choice B reflects this explanation.

ANSWER: B.

2. Alleles are forms of a gene which determine the phenotype, or the observable traits, of an organism. Natural selection, on the other hand, is a form of evolution where the organisms with the better phenotype are favored and allowed to survive. Thus, allele controls the phenotype while natural selection works directly on it.

ANSWER: D.

3. Speciation is the process of evolution in which a new species is formed. To obtain this, populations within a species should be reproductively isolated. That is, they should be restricted from mating with each other so that the species is forced to accumulate the genetic differences within different populations and overtime form into a completely different species.

ANSWER: A.

4. As explained earlier, evolution through natural selection favors the organisms who are well adapted to the environment. Thus, it only makes sense to conclude that adaptation increases the fitness of the individual because it allows them to survive longer.

ANSWER: A.

5. A cladogram is a form of diagram which illustrates the relationship of different species. The node in the cladogram is found on the main branch and each one represents a point where two groups shared a common ancestor. While it is true that nodes also represent a new clade, the terminal node or the tip of the cladogram do not form a new one.

ANSWER: C.

6. Charles Darwin is best known for developing the theory of evolution. In this theory, Darwin observed the statements given among the choices EXCEPT for the one in choice D. Darwin only observed physical traits or characteristics and did not delve into the genetic code of organisms.

ANSWER: D.

7. Through the literal meaning of the phrase itself, “common descent” tells us that all organisms descended from one common ancestor. That is, we all shared a common ancestor some time in our evolutionary history. Among the choices, choice A accurately describes this.

ANSWER: A.

8. As the environment where white and brown mice live starts to get more snow, white mice will adapt better to the new environment since their white fur would allow them to camouflage better. Natural selection will act on the population and brown mice will soon decrease in population as the allele for white fur increases.

ANSWER: D.

9. Since most of the cheetahs went extinct during a single generation, they experienced what we call the bottleneck effect. The effect is called as such since the number of species figuratively passed through a bottleneck. For instance, billions of cheetah passing through a barrier (change in climate) only allowed thousands of them to get through.

ANSWER: B.

10. Macroevolution is a term for the event where evolution happens at a bigger scale. Key patterns for this event would be adaptive radiation or when organisms start filling different ecological niches and convergent evolution or the development of similar traits among different organisms as a response to the same environment or niche.

ANSWER: adaptive radiation and convergent evolution

History

Ineed some ! : d what was one effect the gi bill had on american society in the postwar era? question 1 options: deserving soldiers received medals for their service veterans received benefits that allowed them to purchase tvs more veterans were able to attend college for the first time the military remained at full force question 2 (2 points) saved why did the u.s. experience an era of prosperity after world war ii? question 2 options: new companies profited greatly from the internet through advertisements. americans were finally able to buy affordable

Step-by-step answer

P Answered by Specialist

10

1.) More veterans were able to attend college for the first time

2.) Americans were finally able to buy affordable goods manufactured in Europe shortly after the war ended.

3.) in large cities

4.) With the war over and the economy growing, people were more prepared to raise children.

5.) Developers built affordable, mass-produced houses in places like Levittown.

6.) TV created a common culture and developed common social norms

7.) Car sales decreased because people were concerned about fuel consumption.

9.) It was the first time presidential debates were televised.

10.) Raising the voting age because young people were too irresponsible for political involvement.

Explanation:

Which would explain why there is a growing trend of obesity in kids Aged 2-19

Step-by-step answer

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