A survey of a random sample of 210 male teens and 228 female teens, ages 13 years to 17 years, found that 122 of the male teens and 160 of the female teens brush their teeth at least twice a day. if there is no difference between the proportions in the population of all male and female teens ages 13 years to 17 years who brush their teeth at least twice a day, approximately how many males and females in the sample would be expected to brush their teeth at least twice a day?.

Answers

Answer 1

The number of expected males and females to brush their teeth at least twice a day are : 135 males and 147 females.

What is proportion?

Proportion refers to the part of the things or numbers which are comparable with each other. For example: the weight of the Rahul is 70kgs and weight of the Mohan is 100kgs. Thus the Mohan's weight is greater than the Rahul's weight.

The pooled samples by combining the sample proportion to that of the successes in the each samples and combining the sample sizes.

P^ = (122+160)/(210+228)= 282/438

Then multiply this pooled sample with the two sample sizes:

Expected males = n1*^p = 210(282/438) = 135.21

expected females =n2*^p = 228(282/438) = 146.79

Thus the expected numbers of males are 135 and expected numbers of females are 147.

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Related Questions

When were the Smoky Mountains formed?

200–300 hundred years ago

200–300 thousand years ago

200–300 years ago

200–300 million years ago

Answers

Answer:

the answer is D. 200-300 million years ago

Explanation:

The Great Smoky Mountains are among the oldest mountains in the world, formed approximately 200-300 million years ago. They are unique in their northeast to southwest orientation, which allowed species to migrate along their slopes during climatic changes such as the last ice age, 10,000 years ago.

200-300 million years ago

explain how the demand for a good is affected by prices of it's related goods.​

Answers

Answer: It affected the prices ecause the good was so good now ..

Explanation: RAINLEST>??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????///

What almost everyone gets wrong about weight loss prevention.

Answers

A person reduce their weight if he ate less food is the wrong about weight loss prevention.

What actually a process of weight loss?

The process of weight loss includes the burning of calories and that calories will be burnt if the person exercises daily and take a morning walk on the green grass.

There is no impact of food in burning of calories, some people believed that dieting is the best way to weight loss, but they are wrong. This can be done by the regular exercise in the morning.

Therefore, weight can be loose by taking a regular exercise.

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why did the irish republican army engage in terrorist attacks

Answers

Answer:

The Provisional IRA emerged from a split in the Irish Republican Army in 1969, partly as a result of that organization's perceived failure to defend Catholic neighborhoods from attack in the 1969 Northern Ireland riots.

Explanation: I hope this helps

provide a detailed of the situations somizi mhlongo faced that were negatively exploited by the media​

Answers

The situation that Somizi Mhlongo is accused of is domestic battery and which he denied, which the media have exploited negatively by making assumptions and outright lies against him.

Who is Somizi Mhlongo?

He is a South African actor that has been around the movie industry and gained great acclaim for his role in the 1992 movie, Sarafina.

Hence, we can see that based on the accusations made, the media are acting unprofessionally by making claims against him, so he would be judged by the court of public opinion.

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Which business is an example of a multinational corporation?

a Canadian restaurant chain with locations across Canada
a US-based coffee chain with locations worldwide
an Indian automaker that supplies low-cost vehicles across India
a British boutique with a few stores located in high-end neighborhoods

Answers

Answer:

cc

Explanation:

An Indian automaker that supplies low-cost vehicles across India is the business is an example of a multinational corporation. Hence, option C is correct.

What are low-cost vehicles in India?

The term "fuel economy" refers to the correlation between a vehicle's distance traveled and its low-cost  consumption. Consumption can be calculated as either the amount of fuel used to travel a specific distance or the distance traveled for each unit of low-cost used.

Anything listed as less than 6 l/100 km or greater than 16.5 l/l is considered to be generally excellent. Liters per 100 kilometers is the standard unit of measurement and is also the most used. This is the quantity of fuel needed for a 100-kilometer drive in the car.

The biggest difference between an low-cost  car and a little car is size. Despite the fact that renting and operating both kinds of vehicles can often be relatively affordable and both provide outstanding fuel efficiency.

Thus, option C is correct.

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(03. 04 mc) you think using a finger guide is distracting when you read. your next best action is practicing using the finger guide until you improve moving the finger guide in the opposite direction of the text combining the finger guide with an additional strategy abandoning the finger guide and trying a different strategy

Answers

The best option to avoid finger guide distractions while reading is to abandon that method and find a different strategy (option D)

What is the finger guide method for reading?

The finger guide method for reading is a method in which the reader slides her finger over the lines as she/he reads so as not to get lost in the text she/he is reading.

What other method can we use if we get distracted by the finger guide?

In order not to get lost while we read and not get distracted by sliding our finger on the lines, we can use the ruler method, in which we put a ruler below the line we are reading so as not to get lost in reading.

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abandoning the finger guide and trying a different strategy

Finley is trying to transmit a sound wave that will travel continuously, but he is frustrated by the excess noise. what kind of signal is finley sending? analog digital radio infrared

Answers

If Finley is trying to transmit a sound wave that will travel continuously. The kind of signal is finley sending is  analog.

What is analog?

Analog can be defined as the process  in which a  signals that is transmitted travel continuously based on the pressure received from the sound wave.

Based on the given scenario Finley is making use of analog signal.

Therefore If Finley is trying to transmit a sound wave that will travel continuously. The kind of signal is finley sending is  analog.

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Answer:

A

Explanation:

Just did the test on edge

Hope it helps :)

What is the rationale for scrum teams implementing short sprints?

Answers

They provide frequent coordination.

in which tropical country was the film castaway mostly shot?

Answers

Answer:  I think it was the tiny, little-known island of Monuriki, part of Fiji, is where much of the movie was shot, but correct me if I am wrong.

Explanation:

What did Queen Isabella I and Queen Elizabeth I have in common? A. They both encouraged democracy. B. They both married wealthy princes. C. They both hurt their economies. D. They both supported exploration.​

Answers

Answer: D they both supported exploration


:3

What kinds of contributions did medgar evers make to the civil rights movement?.

Answers

Answer:

Explanation:

As NAACP's first field officer in Mississippi, Evers established new local chapters, organized voter registration drives, and helped lead protests to desegregate public primary schools, parks, and Mississippi Gold Coast beaches.

Why was the donkey adopted as the symbol for the Democratic Party?

Answers

Answer:

The donkey was first associated with the Democratic Party during the 1828 presidential election when opponents of Democratic candidate Andrew Jackson referred to him as a "jacka ss."

Explanation:

Anna thinks that Bill is rude to her because she had to seat him in a noisy, crowded area of the restaurant. Anna takes a ________ view of Bill. Group of answer choices

Answers

Anna takes into account the situationist view of Bill as anna felt that Bill was rude to her as she made him sit in a noisy crowded area of the restaurant.

What do you mean by situationist perspective?

The situationist attitude views human behavior because of the interaction of outside and inner factors. It is made of developments and environmental elements.

Thus, Anna takes into account a situationist view of Bill.

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Additional protections researchers can include in their practice to protect subject privacy and data confidentiality include: Reporting data in aggregate form in publications resulting from the research. Destroying all identifiers connected to the data. Keeping the key linking names to responses in a secure location. Requiring all members of the research team to sign confidentiality agreements. All of the above

Answers

To protect the privacy and confidentiality of data there is a need to destroy all personal identifiers, store linking names in a secure location, and get signed the consent form. Thus, the correct answer is D.

What data security is important?

It is important for organizations and individuals to protect their data. Theft of data will result in financial loss and leaking of the personal information of the organization. This will disturb the integrity of the organization and spoil its reputation in the market.

To protect data and maintains its confidentiality researchers should report data in the required structure and format, there is a need to remove all personal identifiers connected to data. Organizations should also sign confidentiality contracts with the research team to protect their integrity.

Therefore, option D all of the above is the correct answer.

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Which of the following choices is a way people can share their opinions with their leaders and representatives?
a. say nothing
b. read the news
c. arrange a meeting
d apoint leaders

Answers

the answer is d. appoint leaders

uses of self discipline in our day-to-day day life​

Answers

Answer:

be active,smart,good manners,good listening skill and attentive in class

Suggest why provision of jobs for the people can help reduce irresponsible adolescent behaviour.
PLEASE I NEED HELP!!!!!!!!!!​

Answers

Answer:

Your answer: Adolescent children should be guided and counseled by both their parents and, if feasible, specialists. This can assist to avoid reckless behavior in teens. Job-wise, this will assist mold youngsters to comprehend respect, self-discipline, and motivation, all of which benefit all ages.

Explanation:

Hope this helps :)

Explain Jewish belief on the afterlife? Need Help asap

Answers

Answer:

they believe that after you die you go to heaven and the way to get to heaven is you to be baptized

Explanation:. :)

Answer:

There isn't anything after life, because Jews believe that life never ends. It just goes higher and higher. In the afterlife, the soul is liberated from the body and returns closer to her source than ever before.

Explanation:

I've researched this topic before, and had to do a essay on it! here is your anwser best of luck!

What is the organization Ms. Jackley started? How does it work?

Answers

Jessica Jackley is a co-founder of Kiva.org, the first peer-to-peer online micro-lending website in the world. Kiva (www.kiva.org), was dubbed "revolutionary" by the BBC and named one of the best ideas of 2006 by the New York Times Magazine.

Allows Internet users to lend as little as $25 to particular developing-world entrepreneurs, providing affordable cash to help them establish or build a small business.

Since its creation in 2005, Kiva has lent over $100 million from lenders to entrepreneurs in 182 countries, making it one of the fastest-growing social benefit Web companies in history.

Why did Kiva come into being?

Over 1.7 billion individuals worldwide are unbanked and unable to obtain the financial services they want.

Kiva is a San Francisco-based multinational NGO with the purpose to extend financial access to assist underprivileged communities to thrive.

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During the 18th century, scientists began to include behavioral and psychological characteristics in their racial categories. This led to the development of race as a ____________ construct.

Answers

This research on behavioral and psychological characteristics led to the development of race as a sociocultural construct.

What is a Race?

This refers to the ethnicity of a person or group of people that have shared characteristics.

Hence, we can see that from a scientifical standpoint, scientists began to view race in a different light in the 18th century and this led to the research on behavioral and psychological characteristics that led to the development of race as a sociocultural construct.

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why do most countries in a global
society use the same modern
calendar today?

Answers

Answer:

The answer is apparently twofold: first, the calendar spread around the world with Christian colonization; second, as international trade increased, it became convenient for everyone to use the same calendar. In A.D.

Explanation:

when applying for a scholarship, you will often be asked to ________.

Answers

Answer:

write an essay (lol).....

If your boat runs aground, what action should you take in addition to shifting the weight away from the point of impact?.

Answers

The action that should be taken in addition to shifting the weight away from the point of impact is to Halt the engine and raise the outdrive instead of running it. This is further explained below.

What is an engine?

Generally, is simply defined as motion generated by a machine having moving components.

In conclusion, Stop the engine and lift your outdrive rather than running it to avoid a collision, as well as move your weight away from the point of contact

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What terms best describe the government of north korea

Answers

I think it’s called A dictatorship I’ve the people’s democracy

What does responsible citezinship mean

Answers

responsible citezinship means having a certaion role in your community, or state in the world

Examples:

obeying rules and laws

helping others

responsible for your own actions

and e.t.c

If the random samples are large, what is the shape of the sampling distribution of the mean?

A. skewed to the left
B. skewed to the right
C. normal
D. rectangular

Answers

If the random samples are large, the shape of the sampling distribution of the mean is Normal.

What is sample distribution?

It is the ways in which samples or variable are distributed.

Sample can be large in terms of number or small. When the samples are large it is normally distributed with out any skewness.

Therefore, If the random samples are large, the shape of the sampling distribution of the mean is Normal.

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The things they carried civil war

Answers

They carried Supplies an tools

The political reform movement of the early 1900s was called

Answers

Answer:

Progressivism

Explanation:

In the United States, the political and social-reform movements brought major changes to American politics and government during the first two decades of the 20th century.

Who in florence was eligible to serve in the government?.

Answers

Answer:

Guild Members.

Explanation:

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