In two common species of flowers, a and b, the proportions of flowers that are blue are pa and pb , respectively. Suppose that independent random samples of 50 species-a flowers and 100 species-b flowers are selected. Let pˆa be the sample proportion of blue species-a flowers and pˆb be the sample proportion of blue species-b flowers. What is the mean of the sampling distribution of pˆa−pˆb ?.

Answers

Answer 1

The mean of the sampling distribution is [tex]{p_{a}}-p__b}[/tex]

The mean of a sampling distribution is the population mean from which values are sampled. For a population of mean μ, the mean of the sampling distribution is [tex]\mathbf{ \mu_x}[/tex]

[tex]\mathbf{\mu_x = \mu}[/tex]

From the parameters given:

Suppose that independent random samples of 50 species-a flowersand 100 species-b flowers are selected

where;

[tex]\mathbf{\hat p_a}[/tex] = sample proportion of blue specie-a[tex]\mathbf{\hat p_b}[/tex] = sample proprotion of blue specie-b

The mean of the sampling distribution of [tex]\mathbf{\hat p_a -\hat p_b}[/tex] is [tex]{p_{a}}-p__b}[/tex]

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Related Questions

Where are the blueprints for creating a person stored and communication.

Answers

There are different definitions of blueprints. The blueprints for creating a person stored and communication is called gene.

DNA is known to be the blueprint of life. This is due to the fact that it has all the instructions needed for an organism to grow, develop, survive, thrive and reproduce.

Blueprints is known to be the one that instruct and direct the making of Buildings and as such DNA directs the " construction" of cells and organisms.

Genes  are known to be the blueprints for the making of humans are stored and communicated in our genes. They are simply the basic units of genetic information.

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what does it mean to accurately and effectively communicate

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Effective communication is about more than just exchanging information. It's about understanding the emotion and intentions behind the information. ... For many of us, communicating more clearly and effectively requires learning some important skills.

Accuracy in communication encompasses how well communicators create verbal and nonverbal messages that are understood by others and how well those messages are recognized, comprehended, recalled, and interpreted.

A fundraising organization will donate $250 plus half of the money it raises from a charity event. Use this information to answer the following question: what is the independent variable?.

Answers

The independent variable is the money raised from the charity event.

1. A ship is sailing in dense fog and it could be close to dangerous cliffs. The captain switches on the fog horn. The horn sounds and the echo is heard 4 s later. The speed of sound in air is 340 m/s.
a. Calculate the distance between the ship and the cliff.

b. Next time the fog horn sounds it takes 3.5 s for the echo to be heard. State whether the ship is further from, nearer to or at the same distance from the cliff.

Answers

Answer:

a. 1360 m

b. Closer since it takes a shorter amount of time for the fog horn to be heard

Explanation:

a. 340 · 4 = 1360

b. 340 · 3.5 = 1,190

Which of the following holiday does not occur in december?.

Answers

Explanation:

labour day,madaraka day,mashujaa day... does not occur in dece

I think you'll find the house easily as the directions are quite clear.

Answers

The correct rephrase of the sentence is:

The directions are quite clear, so you ought to find the house easily.

Emphatic stress is a test that assesses a student's ability to recognize a word in a phrase or a phrase itself that needs to be stressed or repeated with greater power. 

From the given sentence:

I think you'll find the house easily as the directions are quite clear.

The correct version that clearly rephrases the sentence giving it an objective viewpoint thereby eliminating informal elements in the is:

The directions are quite clear, so you ought to find the house easily.

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Which of the below mentioned operating system is not a proprietary os.

Answers

The operating systems that is not proprietary among the softwares is Linus

Proprietary software can be regarded as non-free software whereby the software's publisher decided to reserves some rights from licenses  so others cannot modify or use it.

Examples of Proprietary software are;

MS-DOS Windows 2000

Therefore,the operating systems that is not proprietary is Linus.

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As the hr director of your company, you are interested in comparing the effects of strength training, aerobic training, and yoga on decreasing rates of injury and absenteeism. Your company has 9 stores with roughly the same number of employees, and you randomly assign 3 stores to participate in strength training, 3 to aerobic training, and 3 to yoga. Your alternative hypothesis is.

Answers

Based on the information given, the alternative hypothesis will be that the observed variables have different effects on the decreasing rates of injury and absenteeism.

It should be noted that the alternative hypothesis suggests a statistical difference between the observed variables.

The question is about the effects of strength training, aerobic training, and yoga on decreasing rates of injury and absenteeism. In this case, the alternative hypothesis will be that the observed variables have different effects on the decreasing rates of injury and absenteeism.

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Choose the best spanish equivalent to the phrase. It's snowing. Está nevando. Hace nieve. Nieve. Es nevando.

Answers

There are different kinds of phrase. The best Spanish equivalent to the phrase. It's snowing is called Está nevando.

A phrase is often describe as a group of two or more words that functions together but it does not become a clause.

Example ''Its snowing'' is a phrase. This phrase can never be a full sentence when it is on its own.

 

está means  itsnevando    means snowing

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Answer:

está nevando

Explanation:

The piecewise function f(x) has opposite expressions. F(x) = startlayout enlarged left-brace 1st row 1st column 2 x minus 1, 2nd column x less-than 0 2nd row 1st column 0, 2nd column x = 0 3rd row 1st column negative 2 x + 1, 2nd column x greater-than 0 which is the graph of f(x)?.

Answers

The piecewise expression presented in the question gives values of f(x)

that change based on the range of the input value, x.

The graph of the piecewise expression f(x) is attached

Reasons:

The given piecewise function is presented as follows;

[tex]f(x) = \begin{cases}2 \cdot x - 1, & \text{ if } x < 0 \\0, & \text{ if } x = 0\\-2 \cdot x + 1, & \text{ if } x > 0 \end{cases}[/tex]

Required:

To find the graph of f(x)

Solution:

From the piecewise function, we have;

For x < 0, f(x) = 2·x - 1

The slope, m = 2

Therefore, as x tends to 0, f(x) tends to 2×0 - 1 = -1

Therefore, for x < 0, the graph starts with an open circle at f(x) = -1, and f(x) decreases as graph moves from right to left.

At x = 0, f(x) = 0, which represent a point on the graph

For x > 0, f(x) = -2·x + 1

Which gives that as x tends to 0, f(x) tends to +1

The slope of the graph, m = -2

Therefore, the graph is a straight line that starts with an open circle at f(x) = +1 and slopes downwards from left to right.

Please find attached the graph of f(x) created with MS Excel

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Answer:

C

Explanation:

took the test on edge :p

What differences does chromatography rely on to separate out parts of a solution.

Answers

colour

Explanation:

chromatography differentiate out parts of solutions as in the form of different colours

Answer:

Different molecule sizes

Explanation:

Separation occurs when molecules of different sizes are included or excluded from the pores within the matrix

Decide if the following sentence is grammatically correct or incorrect. Ella hablaría con su madre. Correct incorrect.

Answers

Answer:

I think it's correct

I don't know much Spanish

The decision regarding the grammar of the given sentence would be:

Correct

What is grammar?

Grammar is described as the system that offers rules to formulate a particular language(written or spoken) coherently and comprehensively.

In Spanish, the structure of a sentence comprises of "Subject + Verb + Object.'

In the given sentence, 'Ella' is the subject, 'hablaría con su" meaning 'would talk to' is the verb, and 'madre' meaning 'mother' is the object.

Thus, the above response is correct.

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¿crees que el estado nación mexicano pudo haberse conformado de una manera distinta de tal manera que en la actualidad perteneciéramos a los países de primer mundo si o no, por qué?.

Answers

El estado-nación mexicano pudo haberse consolidado como una monarquía constitucional y haber alcanzado prontamente una situación de estabilidad, luego mayores niveles de desarrollo, propios de un país del primer mundo en un plazo no mayor a cien años.

Sí, el estado-nación mexicano pudo haberse organizado de manera distinta a la república federal y presidencialista que conocemos actualmente, existieron dos intentos de estado-nación monárquico en la historia mexicana, los cuales son enumerados a continuación:

Primer Imperio Mexicano (1.821 - 1.823), regentado por Agustín de Iturbide.Segundo Imperio Mexicano (1.864 - 1.867), regentado por Maximiliano de Habsburgo.

En el primer intento, el estado-nación iba más allá de México, incluyendo el suroeste de los Estados Unidos y buena parte de América Central, contaba con un ejército relativamente fuerte para impedir incursiones de los Estados Unidos de América y una posición comercial envidiable que hubiera consolidado a ese imperio, que era una monarquía constitucional, como bisagra entre Sudamérica y Norteamérica, entre Europa y Asia, propiciando la inmigración extranjera altamente calificada, necesaria para planes de industrialización y de desarrollo interior y exportador.

Por otra parte, se habría consolidado un concepto de mexicano menos basado en la raza y más asentado en fundamentos tradicionalistas e hispánicos. Quizá México se habría posicionado como país del primer mundo para el primer tercio del siglo XX, siguiendo un patrón similar al que hubiera seguido el Imperio de Brasil.

En el segundo intento, el estado-nación comprendía los territorios actuales, se intentó un modelo de monarquía constitucional con políticas liberales que procuraron el desarrollo económico de vastas zonas del territorio junto con el reconocimiento de los pueblos amerindios. Una vez más, el concepto de mexicanidad habría estado menos asentado en la raza y, a diferencia de lo visto en el Porfiriato, más en conceptos positivistas y eurocéntricos, posiblemente de influencia francesa.

De haberse consolidado, México hubiera alcanzado niveles de desarrollo cultural e industrial mayores a los vistos en el Porfiriato sin muchos de los conflictos sociales germinados en el mismo y posiblemente se hubiera seguido una senda de reformas políticas, económicas y sociales que hubieran evitado la alternativa de la revolución o cualquier otra vía de hecho, así como se habría visto un desarrollo estabilizador de alcance aún mayor para mediados del siglo XX, posicionando el país en el primer mundo para finales de aquel siglo.

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which description of the council-manager form of city government is most accurate?

Answers

Answer:

The council hires an outside expert to make day-to-day decisions.

Explanation:

i know im late but here's the answer

here are the other answers

In 1-2 sentences, explain if the ellipsis is used in the paragraph to indicate a pause or an omission. Use details to support your answer.

Answers

Three equally spaced points ( . . . ) often used  to represent an omission of words in a quotation are best known as ellipsis. They are also known as ellipsis dots, suspension points, or simply ellipsis.

Usage

"For example, I may be writing an article to be published in a journal and not include ellipsis. . ."

In summary, we utilise ellipsis to indicate that a list goes on beyond those items actually spelled out in the text.

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Find the solution to the system of equations. You can use the interactive graph below to find the solution. \begin{cases} -3x-9y=18 \\\\ 4x+3y=12 \end{cases} ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ ​ −3x−9y=18 4x+3y=12 ​.

Answers

The solution to the system of equations is x = 30 and y = -36.

The two equations are known as simultaneous equations. The elimination method would be used to determine to find the solutions.

−3x−9y=18 equation 1

4x+3y=12 equation 2

In order to determine the value of x, take the following steps;

Multiply equation 2 by 3

12x + 9y = 36 equation 2

Add  equation 1 and equation 2

x = 30

Substitute for x in equation 2

4(30) + 3y = 12

120 + 3y = 12

120 - 12 = -3y

108 = -3y

y = 108 / -3 = -36

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Answer:

x=6

y=-4

Explanation:

got it on khan <3

The mother of a 5-year-old informs you that her daughter cheats when playing board games. What is the best response?.

Answers

Answer: Explain that this is developmentally normal until the child is old enough tounderstand complex game rules.

Explanation:

Choose the correct option from the following:the criminal had a very…………scar on his face eng101.

Answers

Answer:

large

Explanation:

necause scars are always large

Few of the applicants made it through the grueling admissions process.

Answers

The question requires that we identify the term that best describes the italicized phrase, "Few of the applicants."

The answer is Simple Subject.

The Simple Subject is a term that refers to the person or thing that performs the action in a sentence.

The simple subject that performed the act of making it through the grueling admissions process is: Few of the applicants.

So, the correct answer is: Simple Subject.

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The goal in choosing vocabulary words is to focus on words that will be _______________ to the children.

Answers

Answer:

teach I give this answer because if we will teach the children the words we will repeat it again and again then the children will repeat it again and again and our mind

fix it

The perimeter of the figure below is 113.7 cm.
Find the length of the missing side.

Answers

Answer:

The length of the missing side it 8.8.

Explanation:

Since we know the equation, we can find the missing side.

=> 113.7 = 38.2 + 2(7.9) + 19.1 + 3(10.6) + x

=> 113.7 = 38.2 + 15.8 + 19.1 + 31.8 + x

=> 113.7 = 104.9 + x

=> x = 8.8

Conclusion:

Therefore, the length of the missing side it 8.8.

Hoped this helped

[tex]BrainiacUser1357[/tex]

8.8cm if you add all the sides besides the missing one then subtract your answer 104.9 by 113.7 then you get 8.8

The nims management characteristic of information and intelligence management may include surveillance of disease outbreaks.

Answers

Answer: It's True

Hopefully it's right

Which statement best expresses the reason why the southern states decided to secede from the union after the election of 1860?.

Answers

The statement which best expresses the reason why the Southern states decided to secede (break-off) from the Union after the election of 1860 is: They feared that the southern economy and way of life would be destroyed.

Based on historical records, the Union was made up of states that were divided into two categories and these included:

Northern statesSouthern states

The Southern states were actively involved in slave trade and the establishment of slave plantations for the growth and development of their agricultural produce.

After the election of President Abraham Lincoln in 1860, the Southern states such as Georgia, Florida, Texas, and Alabama seceded from the Union because they feared that their economy and way of life would be destroyed without slave labor.

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Name two physical properties that could be used to distinguish between cork and lead.

Answers

Answer:

weight and visuals??

Explanation:

Unlike most of the asian population most europeans live.

Answers

Answer:

yes almost Indian half of the population is more the america

Unlike most of the Asian population, most Europeans live in cities. The correct option is B.

What are Asians and Europeans?

Asians are a group of people (not an ethnic category). The United States Census Bureau, the federal government, and the majority of state governments all include India and the whole Indian subcontinent in their data collection efforts.

According to the United Nations, more than half of the population of Europe was living in an urban location by 1950. Previously, Europe was primarily a rural, agricultural region.

Europe, which lies wholly in the Northern Hemisphere, is the westernmost part of the Eurasian landmass. Europe is home to a number of major islands, including Iceland and the British Isles, which include the UK and Ireland.

Therefore, the correct option is B. in cities.

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The question is incomplete. Your most probably complete question is given below:

A. in suburbia

B. in cities

C. In rural areas

D. Away from the water

Which ion in the ground state has the same electron configuration as an atom of neon.

Answers

Answer:

Highlight to reveal answers and explanations

Questions Answer

38 Which ion in the ground state has the same electron configuration as an atom of neon in the ground state? (1) Ca2+ (2) Cl- (3) Li+ (4) O2-

Answers

4

1

1

In order to help prevent collisions with motorcycles, one of the hosts of the video recommends thinking of motorcycles as __________.

Answers

A lot of accident do happen on the highway. In order to help prevent collisions with motorcycles, one of the hosts of the video recommends thinking of motorcycles as occupying a space the same size as a car.

There are different ways to deal with motorcyclists in traffic so as too avoid collision.  When in traffic, one must known that motorcyclist can stop faster or  more quickly than cars.

The National Highway Traffic Safety Administration (NHTSA) has found out that motorcyclists are a likely than passengers of a car to die as a result of an accident and as such safety is important.

There are some important steps to reduce one's risk of being involved in a collision with a motorcycle. They are;

Always be on the alert or on point for motorcycles. Make sure to use your turn signals. Try to avoid distractions while driving. Always be careful and also be mindful when entering crossroads and intersections. Do stay at least four car lengths behind motorcycles on the road.

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The politician's earlier association.

Answers

The politicians earlier associated with the student communist movement faced doubts about his reputation with some in his party who feared his history would hurt his chances of being elected.

What is the explanation of the above statement?

The statement suggests that politicians who had previous involvement with the student communist movement encountered skepticism within their own party.

Some party members expressed concerns that their association with the movement could have a negative impact on their electoral prospects.

This highlights how political history and reputations can influence perceptions and create apprehensions among party members and potentially affect electoral success.

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Full Question:

Although part of your question is missing, you might be referring to this full question:

The politicians earlier associated with the student communist movement———his reputation with some in his party who feared his history would hurt his chances of being elected

Using the periodic table of ions below to predict the charge of the following atoms.

Answers

The charge on GA, SR, As, Br, Se are 3+, 2+, 3+, -, 2- respectively.

Ga and Sr are metals

Br and Se are non metals

As is an amphoteric element

Sr has full electron shell and 2 electrons in the outermost shell making it

[tex] {sr}^{2 + } [/tex]

Ga has full electron shell and 3 electrons in the outermost shell making it

[tex] {ga}^{3 + } [/tex]

Br has 7 electrons in the outermost shell, so it needs one more electron to complete it's orbit making it

[tex] {br}^{ - } [/tex]

[tex] {br}^{ - } [/tex]Se has 6 electrons in the outermost shell, it needs two more electrons making it

[tex] {se}^{2 - } [/tex]

As can give 3 out of its 5 electrons as metals forming

[tex] {as}^{3 + } [/tex]

Therefore, the charge on GA, SR, As, Br, Se are 3+, 2+, 3+, -, 2- respectively.

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Which principal energy level of an atom contains an electron with the lowest energy?.

Answers

I think the answer to this is an s orbital
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