the average weight of 20 students in a certain school was found to be 165 lbs with a standard deviation of 4.5 A) construct a 90% confidence interval for the population mean

The error variance can be Illustrated as σ^2 = E(μ^2) = Var(μ) = (1/n) * ∑(y - (b0 + b1x))^2

The simple linear regression model is of the form:

y = b₀ + b₁x + μ

y = the dependent variable

x = the independent variable

b₀ and b₁ = the parameters of the model, and μ is the error term.

The error term represents the difference between the observed value of the dependent variable and the value predicted by the model. In other words, it is the deviation of the observed y from the expected value of y, given the value of x.

The error variance, denoted by σ^2, is a measure of the spread of the error term. It is calculated as the average squared deviation of the error term from its mean value, which is zero:

σ^2 = E(μ^2) = Var(μ) = (1/n) * ∑(y - (b₀ + b₁x))^2

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Complete question

Given the simple linear regression model y=b0+b1xi+µ, derive the error variance.

Answer:22bb square roots

Explanation:none

A boat heading out to sea starts out at Point AA, at a horizontal distance of 1023 feet from a lighthouse/the shore. The distance from point AA to point BB is  -1114.01 feet.

Distance is a numerical or qualitative measurement of the distance between two objects or places.

The distance of point A from the lighthouse = 1023 feet

The angle of elevation from point A to the lighthouse = 11°

The angle of elevation from point B to the lighthouse = 2°

tanΘ = opposite side to angle / adjacent side to the angle

tan7° = height from sea to the lighthouse / 1023 feet

Height to the lighthouse = tan(11°) × 1023 feet

0.1944 x  1023 feet =  198.8712

For point B

tan3° = 198.8712 feet

Horizontal distance =  198.8712 / tan3°

tan3° = -2.1850

Horizontal distance =  198.8712 / -2.1850 = -91.0165

D = Horizontal distance from B to LH - Horizontal distance from A to LH

Distance from A to B

-91.0165 - 1023 feet =  -1114.01

Therefore, the distance from point AA to point BB is  -1114.01 feet.

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Percentage for the runners with heart rate of above 140 is 50.199% probability.

To calculate percentage of runners heart rate;

Mean, μ = 104

Standard deviation, σ = 12.5

Probability = P(X > 140)

P(X > 140) = [tex]1 - P (\frac{X - μ}{σ} \leq \frac{140 - μ}{σ})[/tex]

P(X > 140) = [tex]1 - P (Z \leq \frac{140 - 104}{12.5})[/tex]

P(X > 140) = [tex]1 - P (Z \leq \ 2.88)[/tex]

For a Z score of 2.88, the cumulative from mean probability and percentile are:

The normal distribution for 2.88 = 0.49801

P(X > 140) = 1 - 0.49801

P(X > 140) = 0.50199

P(X > 140) = 0.50199 x 100

The percentage for the heart rate = 50.199%

The probability of of runners heart rate above 140 is a 50.199% chance.

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Answer:

it does

Explanation:

Answer: oxygen

Explanation:

The first indication for Franz that a major conflict is developing include the following: C) Prussian soldiers are drilling along his route to school.

A conflict can be defined as any form of misunderstanding, disagreement, or struggle that arises between two (2) or more parties such as the members of a team, employees, etc., especially due to any of the following reasons;

In this context, we can reasonably infer and logically deduce that the first indication for Franz to know that a major conflict is developing would be an information which states that the Prussian soldiers are drilling along the route to Franz's school.

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The central bank of a country controls the amount of money in circulation in order to maintain the health of the economy. Banks can regulate the amount of money in circulation by manipulating interest rates.

Economic and financial stability is largely dependent on central banks. In order to achieve low and stable inflation, they implement monetary policy. Following the global financial crisis, central banks have added more tools to their arsenals to address threats to financial stability and control fluctuating exchange rates.

In developing nations, a central bank can be extremely important in creating the financial foundation for growth. A clear and significant activity that falls under this category is the development of local currency and the capital market.

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Compaction and celebration

Answer: b

Explanation: i had it and i got it right

Answer:

Sports figures and celebrities have long been viewed as positive role models for many people. On the one hand, they have the power to inspire and motivate others to achieve their goals, as well as provide a sense of belonging to those who look up to them. For example, athletes can demonstrate the importance of hard work, dedication, and discipline needed to succeed in any field. Furthermore, celebrities can show that one can become successful despite their background or circumstances. On the other hand, there are some drawbacks to viewing sports figures and celebrities as role models. For example, they often live extravagant lifestyles and may not be the best examples of how to handle money responsibly. Additionally, their behavior may not be the best representation of the values that should be instilled in young people. Ultimately, while sports figures and celebrities can be inspiring, it is important to remember that they should not be viewed as role models in all aspects of life.

Explanation:

Answer:

Weathering and Erosion

The economic system of capitalism is debatable; although some contend that it rewards creativity and effort, others contend that it promotes greed.

People have criticized capitalism for concentrating power in the hands of a small minority of capitalists who live off the backs of the working class majority, for putting profit ahead of social good, natural resources, and the environment, and for being a catalyst for economic instability and inequality.

People started to perceive capitalism as an unequal economic system where the wealthy prospered while the poor suffered Socialism Socialism is a form of capitalism where the government owns and manages industry and is in charge of economic planning.

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Question is of Social Studies

Paul Ryan tells his audience that he represents "a part of America that includes inner cities, rural areas, suburbs, and factory towns" in order to illustrate that he can connect to a variety of people.

Social connection can lower anxiety and depression, help us regulate our emotions, lead to higher self-esteem and empathy, and actually improve our immune systems. By neglecting our need to connect, we put our health at risk.

Paul Ryan represents a part of America that includes inner cities, rural areas, suburbs, and factory towns. Over the years I have seen and heard from a lot of families, from those running small businesses, and from people who are in need.

Therefore, Paul Ryan tells his audience that he represents "a part of America that includes inner cities, rural areas, suburbs, and factory towns" in order to illustrate that he can connect to a variety of people.

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Answer:

Once a year, a college goes on an expedition trip to do charity work abroad. Last year’s trip was to help set up a community garden in South America. This year’s trip will be to Kenya. The trips are expensive, but students can save a lot of money by working together and doing fundraising events.

Answer:

igneous rocks