To estimate the average cost of flowers for summer weddings in a certain region, a journalist selected a random sample of 15 summer weddings that were held in the state. A graph of the sample data showed an approximately symmetric distribution with no outliers. The sample mean and standard deviation were $734 and $102, respectively. The journalist will create a 95 percent confidence interval to estimate the population mean. Have all conditions for inference been met?

A. Yes, all conditions have been met.

B. No, the 15 weddings in the sample were not selected at random.

C. No, the sample size is not large enough to assume the sampling distribution of sample means is approximately normal.

D. No, because the graphical display is approximately symmetric it cannot be assumed that the sampling distribution of sample means is approximately normal.

E. No, the sample size of 15 is not less than 10 percent of all weddings in the state.

Going between C and D.

Answers

Answer 1

Answer:

A. All conditions have been met

Explanation:

Random sample is stated

15 < 1/10 all weddings in the state

The graph does not have any skews or outliers, therefore it is a normal distribution

Answer 2

Based on the information given, the correct option will be C. No, the sample size is not large enough to assume the sampling distribution of sample means is approximately normal.

Based on the information given, it was stated that in order to estimate the average cost of flowers for summer weddings in a certain region, a journalist selected a random sample of 15 summer weddings that were held in the state.

It should be noted that Z test is typically greater than 30 samples. In this case, the number of samples used is 15.

Therefore, the sample size is not large enough to assume the sampling distribution.

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Related Questions

100 Points [Calculus] Finding Power Series. An explanation would be greatly appreciated. See attached image.

Answers

It’s the third option. Also look at the explanation

Answer:

[tex]\textsf{C)}\quad \displaystyle 2\sum^{\infty}_{n=0} \dfrac{x^{2n+1}}{(2n+1)!}[/tex]

Explanation:

The series expansions for [tex]e^x[/tex] and [tex]e^{-x}[/tex] are:

[tex]\displaystyle e^x = \sum_{n=0}^{\infty} \frac{x^n}{n!}=1 + x + \frac{x^2}{2!} + \frac{x^3}{3!} + \frac{x^4}{4!}+ \cdots \\\\\\\\e^{-x} = \sum_{n=0}^{\infty} \frac{(-x)^n}{n!}=1 - x + \frac{x^2}{2!} - \frac{x^3}{3!} + \frac{x^4}{4!}- \cdots[/tex]

Therefore:

[tex]\displaystyle e^x -e^{-x} = \left(1 + x + \frac{x^2}{2!} + \frac{x^3}{3!} + \frac{x^4}{4!} + \cdots\right)-\left(1 - x + \frac{x^2}{2!} - \frac{x^3}{3!} + \frac{x^4}{4!} -\cdots\right)[/tex]

This simplifies to:

[tex]\displaystyle e^x -e^{-x} = \left(x + \frac{x^3}{3!} + \frac{x^5}{5!}+\cdots\right)-\left( - x - \frac{x^3}{3!} -\frac{x^5}{5!} -\cdots\right)[/tex]

[tex]\displaystyle e^x -e^{-x} = \left(x + \frac{x^3}{3!} + \frac{x^5}{5!}+\cdots\right)+\left( x + \frac{x^3}{3!} +\frac{x^5}{5!} +\cdots\right)[/tex]

[tex]\displaystyle e^x -e^{-x} =2 \left(\dfrac{x^1}{1!} + \frac{x^3}{3!} + \frac{x^5}{5!}+\cdots\right)[/tex]

The expression inside the parentheses represents terms where the numerators are x raised to consecutive positive odd numbers, and the denominators are factorials of those odd numbers

A positive odd number can be expressed as 2n + 1, where n is a non-negative integer starting from zero.

So, the numerator of each term in the series can be expressed as [tex]x^{2n+1}[/tex] and the denominator as (2n + 1)!.

Therefore, we can express the power series of [tex]e^x -e^{-x}[/tex] as:

[tex]\displaystyle e^x -e^{-x}=2\sum^{\infty}_{n=0} \dfrac{x^{2n+1}}{(2n+1)!}[/tex]

Describe one positive and one negative effect of rural to urban migration

Answers

Positive - Rural communities lose human capital, particularly young adults who are attracted to education and job opportunities in urban centers.

Negative - The migrant population tends to be wealthier and better educated than rural populations, but poorer and less educated than urban populations.

Describe an example of a technology or team and technology interaction that you have had in the context

of school or work

Answers

When you have to call ur parents?

There are approximately 1386 million cubic kilometers (km^3) of water on earth. Approximately how much of that total is fresh groundwater?

A. 1251558

B. 12515580

C. 28565460

D. 125155800

Answers

Answer:

b

Explanation:

well i cant clearly explain but my calculations add up to that

When you can tell how a person feels based on the person's facial expression, which of the four components of emotional intelligence

propagated by Mayer and Salovey comes into play?

A understanding emotions

B. perceiving emotions

C managing emotions

D. using emotions

Answers

Answer:

perceiving emotions

Explanation: got it right on my test!

On the basis of the person's facial expression, you can tell how a person feels by perceiving their emotions. Thus, the correct option for this question is B.

What are the four components of emotional intelligence?

The four components of emotional intelligence are as follows;

Self-awareness.Self-management.Social awareness.Relational management.

Apart from this emotional intelligence, some other components are also essential in determining the feeling of an individual. They may include empathy, motivation, social skills, etc.

Among the given four components of emotional intelligence, you can definitely tell the feeling of an individual by analyzing their facial expression through the perception of their thoughts, emotions, ideas, etc.

Therefore, you can tell how a person feels by perceiving their emotions. Thus, the correct option for this question is B.

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How do folk and popular cultures differ in the ways they help form a society’s overall culture?

Answers

Answer:

Folk culture and popular culture differ in their patterns of origins,distribution and diffusion. Folk culture is practiced by small homogeneous groups living in isolated rural areas while Popular culture is found in large heterogeneous societies that share certain customs despite differences in other personal characteristics among them.

Explanation:

In terms of the way they are both different from each other, we can explain under the patterns listed i.e origin, distribution and diffusion.

Origin: Customs originate from hearths. Folk customs are often anonymous while popular customs originate in more developed countries as part of the market for recreational and disposable income to purchase these material goods.

Distribution :Popular culture is distributed widely across many countries, with little regard for physical factors while Folk cultures often (though not always) incorporate elements of the local environment of wherever it is being noticed. Groups with relatively little contact with others develop unique folk cultures. Thus, people living in some remote environments tend to have a specific culture related to their environment and quite different from other geographical locations practicing same named culture.  

Diffusion: Popular culture diffuses or mixes (usually hierarchically) through rapid electronic communications and transportation networks while Folk culture diffuses or mixes through relocation diffusion.

help me please 18w^2 - 27w. ?

Answers

Answer: 9w(2w-3)

Explanation:

Factor:

18w^2−27w      

9x2=18

9x3=27

=   9w(2w−3)

9w(2w-3) is the answer

What are the six steps of polcy advocates

Answers

Step 1: Set a goal.
Step 2: Assess your resources.
Step 3: Identify the crucial people.
Step 4: Define your message and build awareness.
Step 5: Set and implement the strategies.
Step 6: Track your goals.

What were nazis taught about other races? How do you think this affected the way that they interacted with people that were different form them?

Answers

Nazis were taught that if someone didn’t look a certain way they weren’t aloud to have what they had, children, respect, good food. And since they were taught this way it affected the people around them by scaring them because they thought they were better than everyone else.

what was the point of view of harry truman doctrine speech

Answers

He stated that United States should provide support to free people who are continuously resisting and showing oppressiveness against outside pressure or armed minorities.

Explanation:

President Harry S Truman provided 18 minute speech before joint session of congress on 12th March 1947.

Truman stated that U.S. should provide all aids (financial/political/military) to nations which are under threat from internal or external forces. Truman Doctrine marked change in U.S. international policy to containment from isolationism. As an immediate effect in 1947, his effort helped Greek and Turkish to fight against communist.

Which of the following is air that moves from regions of high pressure to regions of low pressure?
Orain
wind
snow
clouds

Answers

Clouds, correct me if I’m wrong, sorry

Which two words are synonyms of the word protest? strike snarl march pry jump

Answers

Answer:

Strike and March

Answer:

The answer is STRIKE AND MARCH because them are the two words that are a synonyms HOPE this Helps!!

Explanation:

Inorganic mercury is not particularly harmful, but its release into the environment can be hazardous because of a chemical transformation it undergoes into the highly toxic substance known as _______________________________________

Answers

Answer : The kind of substance is probably “Methylmercury.”

Tom scored 200 on a test with a mean of 150 and a standard deviation of 25. What is Toms z score and percentile?

Answers

Answer:

Z score is 2.0

In normal distribution Percentile is

97. 72% Left tailed

2.28% Right tailed

Explanation:

Z score is = (score - mean) / SD

Z = (200-150)/25=50/25=2

The value of Tom's z-score and percentile are;

Z-score = 2

Percentile = 97.725th percentile.

We are given;

score; x' = 200

Mean score; μ = 150

Standard deviation; σ = 25

Formula for z-score here is;

z = (x' - μ)/σ

z = (200 - 150)/25

z = 2

From p-value from z-score calculator, the percentile of a z-score of 2 is 0.97725 or 97.725th percentile.

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PLEASE I WILL GIV YOU BARLIEST is there any scienific proof or evidence behind the brain of a person who identfies as aroantic

Answers

Answer:

I'm petty sure there is but I'm not sure. Just tryin' to be helpful. Rlly hope this helps you.

Summarizing List the reasons behind what the researcher calls the middle-class squeeze" in regard student loan debt.

Answers

Final answer:

The 'middle-class squeeze' in relation to student loan debt is attributed to flat incomes, rising education costs, higher unemployment rates since the 2008 recession, and a lack of savings compared to past generations.

Explanation:Reasons Behind the 'Middle-Class Squeeze' in Relation to Student Loan Debt

There are several reasons behind what researchers refer to as the 'middle-class squeeze' when it comes to student loan debt. Notably, it is caused by a combination of flat incomes and skyrocketing education costs, which lead to a significant financial burden on students and graduates. This situation is exacerbated by challenging economic factors, such as the increase in unemployment since the 2008 recession, creating fewer job opportunities for recent graduates. This makes the repayment of student loans even more daunting, particularly when starting on entry-level wages.

Moreover, the rising tuition rates force students to take on larger loans, resulting in average debts of $25,250 upon graduation as reported in 2010. The interplay between stagnant wages and increasing costs of living compounds the issue, as American families have less money saved compared to previous generations. The phenomenon of the 'middle-class squeeze' is further supported by indicators such as lower bond returns and a widening gap between lower and middle-class incomes. In effect, the social challenge of student loan debt not only impacts the individual graduates but also affects the broader society.

The middle-class squeeze in relation to student loan debt is due to rising tuition rates, stagnating wages, higher private loan interest rates, and limited governmental support for higher education costs, resulting in financial hardships for graduates.

The term "middle-class squeeze" in relation to student loan debt refers to the financial hardship faced by middle-income earners due to the disparity between stagnant wages and the escalating costs of higher education. This has led to a significant burden of debt on graduates. The reasons behind this include rising tuition rates, the increase of student loan debt, limited government funding, higher interest rates on private loans, and sluggish wage growth.

Research by economist Susan Dynarski points out that while the government provides student loans, the structure of the US loan market involves both public and private sectors. Private loans often carry fewer consumer protections and come with higher interest rates, contributing to financial strain. Additionally, Daniela Senderowicz emphasizes that flat incomes and inflating education expenses lead many students towards financial ruin, though she also highlights activism and community building as potential solutions to manage crippling student debts.

Data from the Levy Economics Institute and various studies, like the Class of 2017 college debt statistics, corroborate the issue, revealing the ongoing trend of indebtedness among graduates which impacts the broader economic participation of the middle class.

_____ is the removal of trees and other organisms so that the land can be converted to another use such as a farm, ranch, or new town. A. Strip mining B. Urbanization C. Deforestation D. Desertification

Answers

Answer:deforestation

Explanation:

Every student in fourth grade at Watson Elementary took a Big Five Personality test the first week of school. Principal Albert
recorded the agreeableness score for each child along with the number of referrals for misconduct. He thinks that rating high on
the agreeableness scale might predict better behavior from students.
What type of graph should he choose to best represent his data?

Answers

Answer: Scatterplot

Explanation: The scatterplot is the appropriate way to graph a correlational set of data to display the direction and strength of a relationship.

Answer:

scatter plot

Explanation:

6. A cell with a diploid chromosome number of 12 divided two times, producing four
cells with six chromosomes each. The process that produced these four cells was
most likely (1.) meiotic cell division (2.) external fertilization
(3.) mitotic cell division (4.) internal fertilization

Answers

Answer:

3

Explanation:

A meiotic cell division is the likely process that produced these four cells.

The Meiosis cell division entails a process that reduce the number of chromosomes in the parent cell by half and produces four gamete cells.

Hence, the meiotic cell division is the likely proces that produced these four cells.

Therefore, the Option A is correct.

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Why is Salt dissolved in water and pepper oil used instead of regular salt and pepper?

Answers

Answer: Because the way salt is a fine grain so it will blend with the water

Explanation:

Salt dissolved in water and pepper oil is used  because regular salt and pepper can get lost in a space station

Although your question is incomplete this is the complete question :

Why is Salt dissolved in water and pepper oil used instead of regular salt and pepper in space ?

In space, Astronauts make use of salt dissolved in water and pepper oil when preparing a meal in a space station, and this because salt and pepper in their natural form can get lost in a space station.

Regular salt and pepper lost in a space station can get stuck in any equipment found in the space station which might lead to some level of damage.  

Hence salt dissolved in water and pepper oil is used in space rather than regular salt and pepper .

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The life expectancy of smokers will equal that of non-smokers after ____ years after quitting.
a. 1 to 5
b. 5 to 10
c. 10 to 15
d. 15 to 20
e. 20 to 25

Answers

Life expectancy for smokers is at least 10 years shorter than that of non-smokers. Quitting smoking before the age of 40 reduces the risk of dying from smoking-related disease by about 90%.

Explain how demographic data can assist policy makers in places like Paris, France, Ireland, and Eastern Europe.

Answers

Demographic data is data about characteristics of population like gender, income and age. They have huge effect on how policy is formed on the basis of this data.

Explanation:

Demographic data is one of the most important aspects that the policy makers keep in mind while making policies for the growth and the development of the people of the various countries.

If the population of the country consists of old age people more, then the policy should include more stress on health, if it has more of young people then the stress should be more on development of infrastructure and communication. High income countries will have separate policies compared to polocies of low income countries.


Michaela has up to $20 to spend on bottled water and orange juice for a group hike. It cost $2
for each bottle of water and $4 for each bottle of orange juice.
a) Write an inequality statement for this situation.

Answers

Answer:

20 > 2w + 4j

Explanation:

It feels as though some of the information is missing. So, based upon the information provided above, this is the best equation I can come up with. The total amount is up to $20 (but not including $20, so it is an inequality, meaning that $20 cannot be used). 20 is greater than the sum of the number of bottles of w (water) multiplied by the $2 (cost of water) and the number of bottles of j (orange juice) multipled by the $4 (cost of the orange juice).  

Humans often convert grosslands into farm fields to grow crops. Describe why the conversion of temperate grasslands, such as in the central United States, into agricultural areas is an
environmental problem.​

Answers

Answer and Explanation:

Grasslands are highly important habitats for hundreds to thousands of ecologically important species of fauna and flora that are adapted to the extreme conditions that occur here. However, they are currently threatened by human activities such as habitat destruction and fragmentation for their transformation into agricultural areas.

This disturbance can lead to the alteration of the soil if agricultural practices are not carried out properly, which would have detrimental consequences for the growth of species of flora. Moreover, farmers tend to use a high level of pesticides that, after being carried away by rain or wind, are dangerous for wildlife and the presence of grazing animals can also lead to the destruction of different species of grass that compose the habitat of these organisms. In addition, researchers suggest that, as rainfall patterns change with climate change, these ecosystems could become deserts due to the lack of vegetation.

Grasslands are home to several species hence preservation of grassland maintains biodiversity.

Grasslands are the habitat of so many species such as wildlife, insects, rare plant species, etc. All these organisms constitute the biodiversity that exists in the biosphere.

When this rich ecosystem with such great biodiversity is converted to agricultural farm fields to grow crops, many species may become extinct or forced to relocate due to loss of habitat. This is not good for environmental conservation efforts.

Recently, grasslands have come under pressure owing to population explosion and the need to have more arable land for food production. Several grasslands in the central United States are being convert to grassland with consequent deleterious impact on the environment.

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1. Ludwig Bump runs the bank in Mathsville. You have to help him, though, because he has

forgotten the combination number of the safe. Fortunately, he does remember some things

about the number which may help you to help him.

• The number has four digits (eg. 1234 or 9876).

• All the digits are different.

• It begins and ends with an odd number and has two even numbers in the middle.

· 19 and 519 go into it exactly

Answers

Answer:

9861

Explanation:

The last clue indicates that the solution is 19*519 = 9861. This value also satisfies the other clues, that is, it has four digits, all digits are different, it begins and ends with an odd number (9 and 1) and has two even numbers in the middle (8 and 6).

Which statement about rice production in China and Southeast Asia is correct? A large portion of the rice harvest is used to feed animals. Nearly the entire rice crop is consumed domestically. The majority of rice produced is grown by subsistence farmers. High subsidies are needed to make rice production a sustainable venture. Large surpluses of rice are exported to Africa, Europe, and the Middle East.

Answers

Answer:

Large supply of rice is exported to Africa, Europe and the Middle East. I think.

Which term best describes the type of work done by a postindustrial
community?
O
A. Administration
O
B. Hunting and gathering
O
C. Agriculture
O
D. Industry

Answers

Answer:

D

Explanation:

because postindustrial don't do any of the other's

does anyone do parkour here

Answers

Answer:

yessir

Explanation:

i am rad

8. Some mutations can help an organism survive
True or false

Answers

Answer: True

Explanation: A mutation can help an organism survive in a particular environment. A mutation is a change in the nucleotide sequence of an organism. A mutation can be of three types - beneficial, harmful or neutral. A mutation is considered to be beneficial when it produces a variation that helps the organism to better adapt to its environment.

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