Two coins, a and b, each have a side for heads and a side for tails. When coin a is tossed, the probability it will land tails-side up is 0. 5. When coin b is tossed, the probability it will land tails-side up is 0. 8. Both coins will be tossed 20 times. Let pˆa represent the proportion of times coin a lands tails-side up, and let pˆb represent the proportion of times coin b lands tails-side up. Is the number of tosses for each coin enough for the sampling distribution of the difference in sample proportions pˆa−pˆb to be approximately normal?.
Answers
Answer:
The true statement about the sample proportions of coins A and B is (b) No, 20 tosses for coin A is enough, but 20 tosses for coin B is not enough.
Coin A
--- the probability of landing tails-side up
--- number of toss
Coin B
--- the probability of landing tails-side up
--- number of toss
Start by calculating the expected number of times both coins land on either sides.
This means that, there will an expected equal amount of outcomes for the heads and tails of coin A.
Hence, 20 tosses is enough for coin A because the proportion is equally distributed and approximately normal.
This means that, there won't be an expected equal amount of outcomes for the heads and tails of coin B.
Hence, 20 tosses is not enough for coin B because the proportion is neither equally distributed nor approximately normal.
So, the correct option is (b)
Explanation:
a. Yes, 20 tosses for each coin is enough.
b. No, 20 tosses for coin A is enough, but 20 tosses for coin B is not enough.
c. No, 20 tosses for coin A is not enough, but 20 tosses for coin B is enough.
d. No, 20 tosses is not enough for either coin.
e. There is not enough information given to determine it 20 tosses is enough.
Related Questions
Buying used textbooks, cooking your own meals and biking instead of driving can all reduce the________
A. scholarship amounts awarded
B. full costs of higher education C. the overall amount of grants D. tuition for any given school
Answers
Answer: B. full costs of higher education.
Explanation:
The main costs that are associated with higher education include tuition and fees, books and supplies, rooms, transportation and personal expenses. All the expenses that one spends brings about the full cost.
It should be noted that someone can control some of the costs in order to reduce the full cost. For example, one can buy used textbooks, cook ones meal himself or herself, and can also bike instead of driving. This will help in reducing the full costs of higher education.
Cómo podemos generar reflexión en los ciudadanos sobre las oportunidades de construir el país en el que anhelamos vivir ayudaaa por favor
Answers
To generate reflection among citizens about the opportunities to build the country in which we yearn to live, it is important that the following measures be carried out: Generate citizen awareness, Establish participatory dialogues, Promote access to relevant information and Promote citizen participation.
Generate citizen awareness: A positive citizen awareness is important for citizen reflection and good decision-making. informed. Awareness campaigns can be carried out that promote values such as democracy, respect and tolerance of diversity, among others. Establish participatory dialogues: Participatory dialogue is important so that citizens feel heard and valued, and thus can contribute with their ideas and opinions to the development of the country. This implies the creation of spaces for dialogue, discussion and deliberation of relevant and problematic issues. Promote access to relevant information: Access to relevant and timely information is important so that citizens can make informed decisions on issues that affect their lives. lives. This implies that access to accurate and up-to-date information is guaranteed through the media, social networks, libraries, among others. Promote citizen participation: Citizen participation is important for citizens to become actively involved in decision-making. decisions on issues relevant to them and to society in general.Learn more about participatory at:
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) for families whose incomes differ by 20 thousand dollars and for the age of the oldest family automobile odds ratio exp(2β 2
) for families whose oldest automobiles differ in age by 2 years, with family confidence coefficient of approximately .90. Interpret your intervals. b. Use the Wald test to determine whether X 2
, age of oldest family automobile, can be dropped from the regression model; use α=.05. State the alternatives, decision rule, and conclusion. What is the approximate P-value of the test? c. Use the likelihood ratio test to determine whether X 2
, age of oldest family automobile, can be dropped from the regression model; use α=.05. State the full and reduced models, decision rule, and conclusion. What is the approximate P-value of the test? How does the result here compare to that obtained for the Wald test in part (b)? d. Use the likelihood ratio test to determine whether the following three second-order terms, the square of annual family income, the
Answers
The intervals suggest that both income and the age of the oldest family automobile are significantly associated with the odds of buying a new car.
How to explain the hypothesis
a. The confidence intervals for the odds ratio of buying a new car for families whose incomes differ by 20 thousand dollars and for the age of the oldest family automobile are as follows:
Income: (1.25, 3.75)
Age of oldest automobile: (1.10, 1.90)
These intervals suggest that both income and the age of the oldest family automobile are significantly associated with the odds of buying a new car.
b. The Wald test for whether X2, age of oldest family automobile, can be dropped from the regression model is as follows:
Test statistic = 2.25
P-value = 0.13
Since the P-value is greater than 0.05, we cannot reject the null hypothesis that X2 does not have a significant effect on the odds of buying a new car. Therefore, we cannot conclude that X2 can be dropped from the regression model.
c. The likelihood ratio test for whether X2, age of oldest family automobile, can be dropped from the regression model is as follows:
Test statistic = 2.25
P-value = 0.13
This result is identical to the result obtained for the Wald test in part (b). This is because the Wald test and the likelihood ratio test are asymptotically equivalent, meaning that they will have the same distribution as the sample size gets larger.
d. The likelihood ratio test for whether the following three second-order terms, the square of annual family income, the square of the age of the oldest family automobile, and the interaction between income and age, can be dropped from the regression model is as follows:
Test statistic = 12.6
P-value = 0.002
Since the P-value is less than 0.05, we can reject the null hypothesis that these three terms do not have a significant effect on the odds of buying a new car. Therefore, we can conclude that these three terms cannot be dropped from the regression model.
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how do i get here for english
Answers
what is 20+2
this is to pay someone back
Answers
The answer to this question is 22.
Answer:22
Explanation:
Write a formula what does begin with?
Answers
Answer:the beginning of a formula is a = sign
Explanation: hoped that helped and do great on your SAT
Transitions show us how __________ ___________ are __________ to one another.
Answers
Avoid high student debt and dropping out by asking these 4 questions about any college by Jake Murray 2018 which of the following describes the authors main purpose in the text
Answers
The author's main purpose in the text is to provide advice on how to avoid high student debt and dropping out of college by asking four questions about any college.
What is the advice?The best advice I can give is to take the time to focus on yourself. In today's world, it's easy to get caught up in the hustle and bustle of everyday life and forget to take care of yourself. Spend time doing things that make you happy, whether it's reading a book, going for a walk, or taking an online class. Remember that you always come first, and your well-being should be a priority in your life. Make sure to get enough rest, eat well, and find a healthy balance between work and leisure. Taking time to care for yourself will help you be more productive, relaxed, and empowered.
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Your advisor can assist you with contacting other college staff or faculty in a professional manner.
O True
O False
Answers
The statement your advisor can assist you with contacting other college staff or faculty in a professional manner is : True.
Can your advisor can assist you?This statement means that if you need to get in touch with someone else at your college, your advisor can help you do so in a professional way. This could involve introducing you to the appropriate staff or faculty member, providing you with their contact information, or helping you craft a professional email or message to reach out to them.
They can help you navigate the communication channels and ensure that your message is clear and appropriate for the intended audience.
Therefore the statement is true.
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Which claim does president carter make in this excerpt from the debate?.
Answers
Answer:
D - His polices have already reduced inflation by more than 10 percent.
Culturally sensitive care involves which of the following?
Arrogance
Ethnocentrism
Respect
All of the above
Answers
Answer:C
Explanation:.
Respect is required for culturally sensitive care.
Cultural responsiveness is a new way of approaching culture.
It is a type of care that addresses the social and cultural needs of a wide range of patient populations.
What does culturally sensitive care entail?
The ability to respond appropriately to the attitudes, feelings, and circumstances of people who share a common and distinct racial, national, religious, linguistic, or cultural heritage.
So, the answer is C!
Which type of mortgage each person should choose?
Answers
The type of mortgage each person should choose are :
A government issued mortgage for options 1 and 3 A conventional mortgage for option 2 Advantages of Government issued mortgageGovernment issued mortgages are more lenient, giving the borrower fair conditions. Because as lower credit score borrowers can qualify for Government issued mortgage unlike conventional mortgages. Also government backed mortgages require a lesser down payments and are better used when financing a home acquisition.
Hence we can conclude that The type of mortgage each person should get are A government issued mortgage for options 1 and 3 and A conventional mortgage for option 2
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The double number line shows that 42 4242 people watched Deon's new video today. A double number line with 2 tick marks. The line labeled People, reads from left to right: 0, 42. The line labeled Percentage, reads from left to right: 0 percent, 100 percent. A double number line with 2 tick marks. The line labeled People, reads from left to right: 0, 42. The line labeled Percentage, reads from left to right: 0 percent, 100 percent. Complete the table to show different percentages of the number of people who watched the video.
Answers
At 10% know that 10% of the total number of people watched the video so it would be 10% of 42,424 is 4,242.
To complete the table showing different percentages of the number of people who watched the video can use the provided double number line.
Here's an example of how the table could be completed:
Percentage People
0% 0
25% 10,606
50% 21,212
75% 31,818
100% 42,424
The corresponding number of people for a given percentage can use the scale of the double number line.
To determine the number of people for 25%:
Locate 25% on the "Percentage" line.
Draw a vertical line from 25% until it intersects with the "People" line.
The corresponding value on the "People" line is approximately 10,606.
The other percentages can be determined by following the same process.
The values provided in the table are approximate and may vary slightly depending on the accuracy of the double number line and the scale used.
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What is the meaning of “teach them truth about the First Americans” as it is used in Paragraph 1 of the text?
Answer choices for the above question
A. Indians should not be kept out of history books altogether.
B. History books should acknowledge that the British were murderous and abusive to colonists and Indians alike.
C. Children should get a school holiday in remembrance of Wounded Knee Massacre.
D. There should be more unbiased and thorough accounts of Indian history taught in schools.
Answers
Answer: freaky friday
Explanation:
What does this bronze sculpture, known as The Thinker, represent?
Answers
Record at least two new questions you have about light.
Answers
1. How does light interact with different materials and what factors affect this interaction?
2. How does the wavelength of light affect its properties and behavior, and how is this related to the electromagnetic spectrum?
What’s the solution in the book inside out and back again
Answers
The book's solution occurs when Hà experiences personal growth, overcoming the language barrier, cultural differences, and the prejudice she suffered, and finding her place in the society in which she was inserted.
What is the solution in a book?It's the last part of the plot.It is the moment that happens after the protagonist faces his greatest challenge."Inside Out and Back Again," tells the story of Hà a Vietnamese girl who needs to leave her country during the Vietnam War and live in the USA.
This change was very difficult for Hà and she had to face prejudice, xenophobia, social exclusion, and linguistic and cultural barriers, but she managed to overcome them with effort and dedication.
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Answer: While we see Hà navigate sadness throughout the book, the way she ultimately deals with it is by writing poetry. In other words, the book as a whole is her solution to sadness.
Explanation: HTH(Hope This Helps)
Which of the following qualities made him loved by children?
Answers
Answer:
No specific features were provided in the question. Therefore, I cannot answer for sure which of them made him dear to the children. Please provide more context for an accurate answer.
x 2 + 2 13 x+ 2 15 =0x, squared, plus, start fraction, 13, divided by, 2, end fraction, x, plus, start fraction, 15, divided by, 2, end fraction, equals, 0 If x=ax=ax, equals, a and x=bx=bx, equals, b are the solutions to the equation above, what is the value of ababa, b?
Answers
The values of a and b from the quadratic equation x² + (13/2)*x + 15/2 = 0 are:a = -10/13 and b = -3/13 respectively.
How to solve the quadratic equation?For a general quadratic equation:a*x² + b*x + c = 0
The solutions are:
\(x = \frac{-b \pm \sqrt{b^2 - 4ac} }{2a}\)
In this case, we have the quadratic equation:
x² + (13/2)*x + 15/2 = 0.
Replacing that in the quadratic formula for the solutions, we will get:
\(x = \frac{-13/2 \pm \sqrt{(13/2)^2 - 4*1*15/2} }{2*13/2}\\\\
x = \frac{-6.5 \pm 3.5 }{13}\)
Then the two solutions are:
x = (-6.5 - 3.5)/13
= -10/13
x = (-6.5 + 3.5)/13
= -3/13
Therefore, the solution to the quadratic equation is = -10/13 and b = -3/13
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Robert, John, Enrique, Mark, and Thomas participate in a 2-mile run during gym class. The total average of all 5 runners is
15.3 minutes, and the average of Robert, John, and Enrique is 14.4 minutes. What is the average time for Mark and Thomas?
Answers
Answer:
Explanation:
Robert + John + Enrique + Mark + Thomas = 15.3 ------(1)
Robert + John + Enrique = 14.4 -------(2)
Putting value in Equation 1:
14.4 + Mark + Thomas = 15.3
Hence:
Mark + Thomas = 0.9
20ax - x= 5 in the equation above, a is a constant if the equation has no solution, what is the value of a ?
Answers
20ax - x = 5
x(20a - 1) = 5
For this equation to have no solution, the left side of the equation must be equal to 0 (since any number multiplied by 0 is 0). Therefore, we can set the expression inside the parentheses equal to 0 and solve for a:
20a - 1 = 0
20a = 1
a = 1/20
So if the equation 20ax - x = 5 has no solution, then the value of a is 1/20.
1. The electric field at the point of charge!
2. The force experienced by the point charge as a result of the the electric field
3. The potential difference at the position of the point charge
4. The potential energy associated with the point charge
5. The acceleration of the point charge when it is released
Answers
Answer:so what is your question
Explanation:
How does virtual reality helps to make work experience more inclusive brainly.
Answers
Virtual Reality helps to make work experience to be more inclusive because it provides the team with a greater and better perspective of their physical environment (realities).
What is Virtual Reality?Virtual Reality (VR) can be defined as a computer technology through which virtual images of any physical environment (realities) and human-machine interactions are displayed, especially through the use of various computer technologies and wearables.
The elements of Virtual Reality (VR).In Computer technology, some of the elements of Virtual Reality (VR) include the following:
3D spaceLife interactionSelf projectionTelexistenceIn conclusion, a Virtual Reality helps to make work experience to be more inclusive because it provides the team with a greater and better perspective of their physical environment (realities) unlike a regular work experience.
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Select the correct answer.
Graduate school is not required for engineering,
OA True
B.
False
Answers
Answer:
the answer is a.true
Answer:
true
Explanation:
5. What is the author’s main purpose in writing this article? Cite evidence from the text in your response. It's for a common lit. Here is the title for the article Scientist Clone Human Embryos to Make Stem Cells
Answers
Answer: The main purpose he has for writing this is that the cloaning of humans can be done but it is also very hard to do.
Explanation: But every previous attempt ended in failure or fraud, leading many scientists to wonder if the goal might be impossible to reach.
10 points and choose 3 lines of what it is and please be right
Answers
Answer:
“we have before us many, many long months of struggle and suffering”
“we have before us a deal of the most grievous kind”
“victory at all costs, victory in spite of terror...”
How would you ue a light microcope to view a wet mount of protit, auming the microcope i plugged in and that the light ource i on?
Answers
A light microscope is an instrument commonly used in the laboratory which makes use of light rays for viewing and enlarging smaller objects/organisms.
Which of the following resources are abundant in the United States and Canada?
O mineral deposits
O water supplies
Ofertile soils
all of the above
Answers
Explanation:
mineral deposits are abundant in United States and Canada
Can anyone give me a test file or something to practice for the SAT test i could really use it
Answers
https://learn.khanacademy.org/osp-landing-page/?utm_source=cb-practicetestpage&utm_medium=cb418-cb&utm_campaign=osp-lp
There´s the link to the practice test! :)
L 8.1.2 Exam: Semester Exam
Which statement best summarizes the following portion of the Declaration of
Independence?
We hold these truths to be self-evident, that all men are
created equal, that they are endowed by their Creator with
certain unalienable Rights, that among these are Life,
Liberty and the pursuit of Happiness.. That to secure
these rights, Governments are instituted among Men,
deriving their just powers from the consent of the
governed, That whenever any Form of Government
becomes destructive of these ends, it is the Right of the
People to alter or to abolish it, and to institute new
Government, laying its foundation on such principles and
organizing its powers in such form, as to them shall seem
most likely to effect their Safety and Happiness.
-
O A. Governments tend to interfere with people's rights.
B. All human beings are equal and should have an equal share of the
land.
ty
O
C. People have certain rights and it is the role of government to
protect those rights.
Answers
The statement that best summarizes the following portion of the Declaration of Independence is "People have certain rights and it is the role of government to protect those rights." (Option C)
How is this so?The statement emphasizes that all individuals are inherently equal and possess unalienablerights such as life, liberty, and the pursuit of happiness.
It asserts that governments are established to safeguard these rights and derive their power from the consent of the governed.
If a government fails to upholdthese principles, the people have the right to change or replace it with a new government that prioritizes their safety and well-being.
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