In may 2002, the ap stats exam..

In May 2002, The Ap Stats Exam..

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Answer 1

The null hypothesis is that The distribution of scores for PWSH students is not significantly different from the national distribution of scores.

The alternative hypothesis is that the distribution of scores for PWSH students is significantly different from the national distribution of scores.

How to calculate the value

The test statistic:

χ^2 = [(16-43.16)^2/43.16] + [(21-83.97)^2/83.97] + [(11-93)^2/93] + [(22-74.45)^2/74.45] + [(10-94.14)^2/94.14]

= 182.06

Using a chi-square distribution tablez we find the critical value at a significance level of 0.05 to be 9.488. Since our test statistic of 182.06 is much larger than the critical value of 9.488, we can reject the null hypothesis

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Related Questions

Regina struggles with reading long passages and feels like no matter how hard she tries she will not understand them, so she skips through reading passages on her tests. This is an example of aversive conditioning vicarious learning learned helplessness avoidance learning reinforcement

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The example of Regina struggles with reading and her unwillingness to study further can be described as that of: learned helplessness.

What is Learned Helplessness?

Learned helplessness can be defined as a phenomenon which describes a scenario whereby an individual feels that the action they have taken will not lead to a desirable outcome, thereby discouraging them from trying to make more efforts.

In the scenario cited, it depicts Regina's struggles and her unwillingness to further study as the phenomenon described as: learned helplessness.

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how can poltical parties can influence political ideology and beliefs

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There are various ways in which political parties can influence political ideologies and beliefs through massive campaigning, advertisements, organizing rallies, increasing reach on different social media platforms, etc.

Political ideologies and beliefs refer to a set of values and principles that a particular party abides by. These ideologies represent a different governance, economy, and social welfare approach.

These ideologies and beliefs can be promoted among party members and supporters through respective party forums. It can be promoted among the wider public by organizing big rallies, door-to-door campaigns, speeches, and debates on various topics.

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At Westville High School there are 315 seniors and 389 juniors. 65% of the seniors have parking

passes and 42% of the juniors have parking passes. The statistics teacher selects a SRS of 30

seniors and a separate SRS of 30 juniors. Let p hat s - p hat j , be the difference in the sample

proportions of

seniors and juniors that have parking passes.

a. What is the shape of the sampling distribution of p hat s - p hat j? Why?

b. Find the mean of the sampling distribution.

c. Calculate and interpret the standard deviation of the sampling distribution.

d. What is the probability that the difference in sample proportions (senior - junior) of students

with parking passes is greater than 30%?

Answers

Answer:

Explanation:c=5

Recently, business headlines have highlighted the drop in oil prices due to high production in states like Texas, North Dakota, Oklahoma, etc. What do you think will be the economic impact on oil prices if the Organization of Petroleum Exporting Counties (OPEC) reduced or cut back production?

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If OPEC reduced or cut back production, it is likely that oil prices would increase due to a decrease in global supply. '

What will be the impact?

This could have both positive and negative economic impacts. On one hand, it would benefit oil-exporting countries by increasing their revenue and potentially stimulating their economies.

On the other hand, it could lead to higher fuel costs for consumers and businesses, potentially resulting in decreased spending in other areas of the economy. Overall, the impact would depend on the extent of the production cuts and the global demand for oil.

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HURRYY

What is MOST accurate about the audience for pop music?

A.Only young people listen to pop music.

B.It appeals to people with a specific ideology.

C.All older people hate pop music.

D.Pop music appeals to people of all ages.

Answers

D. Pop music appeals to people of all ages.

can someone explain how to do this

Answers

The y-coordinate of point P is approximately 11.609.

The speed at time t = 2 is approximately 12.163.

How to find the coordinates

(a) To find the y-coordinate of point P, we need to solve for y(2) using the given parametric equation:

y(2) = -ln(1 + (2 - 4)^2) = -ln(1 + 4) = -ln(5) ≈ -1.609

Now, using the initial position of the object (-13, 5), we can find the displacement of the object in the y-direction from time 0 to time 2:

Δy = y(2) - 5 ≈ -1.609 - 5 ≈ -6.609

Therefore, the y-coordinate of point P is:

y-coordinate of P = 5 + Δy ≈ 5 - 6.609 ≈ -1.609

y-coordinate of P = 5 + |Δy| ≈ 5 + 6.609 ≈ 11.609

Therefore, the y-coordinate of point P is approximately 11.609.

(b) To find the acceleration vector at time t = 2, we need to take the second derivative of the position vector with respect to time:

r''(t) = (-6t, 1/(1 + (t-4)^2) - 2/(1 + (t-4)^2)^2)

r''(2) = (-12, 0.0789)

So the acceleration vector at time t = 2 is approximately (-12, 0.0789).

To find the speed at time t = 2, we need to find the magnitude of the velocity vector at that time:

r'(t) = (12 - 6t, -1/(1 + (t-4)^2))

|r'(2)| = ✓((12 - 6(2))^2 + (-1/(1 + (2-4)^2))^2) ≈ 12.163

Therefore, the speed at time t = 2 is approximately 12.163.

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Because of the potentially sensitive and personal nature of the data that is stored in Sarah's database,
which of the following factors does she NOT need to be concerned with, from a security standpoint?
a. The database should not be publicly available and should only be accessed by an authorized
user (i.e. Sarah) using a secure username and password interface.
b. The database should not store any sensitive or personal information that Sarah does not
actually need in order to schedule a job (i.e. parents' political affiliations, previous addresses,
etc.).
If parents provide only partial information when reserving a babysitting job (e.g., they do not
enter data for one or more of the items stored in the database), the entire database record will be
insecure and vulnerable to attackers.
d. The information stored in the database should be encrypted so that any unauthorized individual
(i.e. anyone other than Sarah) cannot read the data.

Answers

Option b. The database should not store any sensitive or personal information that Sarah does not actually need in order to schedule a job (i.e. parents' political affiliations, previous addresses, etc.).

What is the database about?

If parents provide only partial information when reserving a babysitting job (e.g., they do not enter data for one or more of the items stored in the database), the entire database record will be insecure and vulnerable to attackers.

This is not a concern from a security standpoint because Sarah should not be storing any sensitive or personal information in the database that she does not actually need for scheduling a babysitting job. Storing unnecessary data increases the risk of potential data breaches or unauthorized access, and it is generally recommended to only collect and store the minimum amount of data required for the intended purpose.

The other factors mentioned in options a, c, and d are all valid security concerns that Sarah should consider when managing the database.

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In what way was chinas cultural revolution a challenge to an established power or status quo in the Cold War? How and why did they come to power?

Answers

China's Cultural Revolution was a challenge to the established power and status quo of the Cold War because it aimed to overthrow the existing political and social order in China. The revolution was launched by Mao Zedong, the leader of the Chinese Communist Party, who sought to purge perceived capitalist and traditionalist elements from Chinese society and create a new socialist order. This included targeting intellectuals, party officials, and anyone suspected of opposing Mao's ideas.

The Cultural Revolution was a response to Mao's belief that the Chinese Communist Party was becoming too bureaucratic and had lost its revolutionary spirit. Mao felt that the party needed to be reinvigorated and that the revolution needed to be taken directly to the people. By mobilizing young people in the form of the Red Guards, Mao was able to launch a massive campaign of political indoctrination and cultural reform.

The revolution was a challenge to the status quo of the Cold War because it represented an alternative model of socialism to the Soviet model. Mao believed that the Soviet model was too bureaucratic and authoritarian and that the Chinese Communist Party needed to forge its own path. By launching the Cultural Revolution, Mao was able to demonstrate the power of the masses and the importance of ideological purity in the revolutionary struggle.

In terms of how and why Mao and the Chinese Communist Party came to power, it was the result of a long and tumultuous period of Chinese history. After the fall of the Qing Dynasty in 1911, China experienced a period of political fragmentation and foreign domination. The Chinese Communist Party was founded in 1921, and after a long struggle against the Nationalist Party, led by Chiang Kai-shek, the Communists were able to come to power in 1949.

Mao's leadership was crucial in this process, as he was able to rally the masses behind the Communist cause and provide a vision of a new China. Mao's ideas about socialism with Chinese characteristics and the importance of constant revolution were central to the success of the Chinese Communist Party in coming to power. However, Mao's later policies, such as the Great Leap Forward and the Cultural Revolution, proved to be disastrous for China and ultimately led to his downfall.

How is the Euler's line of a triangle related to calculus

Answers

The Euler line of a triangle is a lines feature of the trio namely not straightforwardly had connection with calculus.

What is the line of triangle?

It is flattery that passes through various main points of a trio, containing the centroid (the point of balance), the orthocenter (the crossroads of the altitudes), and the circumcenter (the center of the circumscribed circle).

However, the study of arithmetic and arithmetic, that are approximately had connection with the properties of triangles and the Euler line, maybe had connection with arithmetic not completely.

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Film: Scream 1996

What’s a scene where Sydney Prescott is not afraid to fight back the killer?

Answers

There are a few scenes in "Scream" (1996) where Sydney Prescott fights back against the killer, but one of the most memorable is towards the end of the film.

How to explain the scene

In this scene, Sydney is being chased by the killer, who is revealed to be Billy Loomis (played by Skeet Ulrich) and his accomplice Stu Macher (played by Matthew Lillard). After being cornered by the two, Sydney manages to grab a nearby umbrella and stab Billy with it, knocking him down. She then hits Stu with a TV and runs upstairs, locking herself in a bedroom.

As Billy recovers, he enters the room through the window, and Sydney attacks him with a vase. She then uses a computer to smash him in the head and knock him unconscious. When Stu enters the room, Sydney manages to subdue him with a gunshot to the head.

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Professor Willborn recently completed a naturalistic observation study on people who play violent video games, She submitted work for publication and one of the reviewers suggest that she further investigate the relationship between violent video games and attitude towards real-word violence using different research method. Professor Willborn is considering using the experimental method or the correlational method for the follow up study. Answer the following questions about both research methods.


1, What variables would Professor Willborn examine in her experimental study? What variables would Professor Willborn examine in her correlation study? ( Use specific terminology associated with the variables if appropriate. )

2. How could Professor Willborn operational define at least one of the variables in her experimental study? How could Professor Willborn operationally define at least one of the variables in her correlational study. (Do not define the same variable for both methods)

3. How could Professor Willborn organize her participants to gather data in her experimental study? How could professor willborn organize her participants to gather data in her correlational study?

4. What kind of conclusion would Professor Willborn be able to form based on the results of her experimental study? What of concussions would Professor Wilburn be able to form based on the results from her correlational study?

Answers

An experimental study would be composed of dependent and independent variables.

What is an experimental study?

We know that in an experimental study, there would be a dependent and there would be an independent variable. In the case of the professor, the variables that would be studied are dependent and independent variables.

Professor Willborn might use participants' time spent playing a violent video game to operationally characterize exposure to violent video games in an experiment.

By asking participants how frequently they play violent video games or by utilizing already-existing measures of exposure to violent video games, Professor Willborn might use a correlational study to operationally characterize exposure to violent video games.

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We explain people’s behaviors in several ways. Describe attribution theory, the fundamental attribution error, and self-serving bias. Use examples in your descriptions. How do our explanations both help and hurt our accurate understanding of behavior?

Answers

Attribution theory is known to be one that is seen as a psychological concept that tells more about the way that people make sense of as well as attribute issues to their own as well as others' behaviors.

What is the behaviors  about?

The key fundamental attribution error is  one that is seen as a form of a cognitive bias and it is one where people are known to tell too much of the role of internal factors as well as they look under the role of external factors when telling about the behavior of others.

Therefore, Self-serving bias is seen as a form of cognitive bias in which individuals are said to attribute a lot of their successes to things such as  internal factors.

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