Answer:
Take your mind off it.Do something you enjoy and that will distract you for a while like listening to music, reading, baking or crafts.
Eat healthily and consume fresh foods.Change your mind set and adopt a positive attitude.
Take a break from social media.Comparing yourself and your productivity to others is a recipe for disaster.
Laugh.Laughing out load actually increases oxygen and blood flow, which immediately reduces stress. Spend time with a funny friend, watch something silly or book tickets to the local comedy club
Ghana colonial master were called
Answer:
general Abu Bakar Ibn Umar
In an experiment examining the effects of size of plate on amount of food eaten, one group of participants is measured after eating food on 12 inch plates. A week later, the same group of participants is measured after eating food on 10 inch plates. This is an example of a ____ design.
Answer:
Within subject
Explanation:
A within study design is also called the repeated measures design. Here we use the same participants twice or more to test the same condition. Every one on the participants are made to test all conditions.
From this question, we can see that same group of participants participated twice in the study, first after eating on 12 inch plate, secondly after using the 10 inch plate.
In semiconductor manufacturing, wet chemical etching is often used to remove silicon from the backs of wafers prior to metallization. The etch rate is an important characteristic of this process and known to follow a normal distribution. Two different etching solutions have been compared using two random samples of 10 wafers for each solution. Assume the variances are equal. The etch rates are as follows (in ml per minute):
Solution 1 Solution 2
9.8 10.4 10.2 10.0
9.4 10.3 10.6 10.2
9.3 10.0 10.7 10.7
9.6 10.3 10.4 10.4
10.2 10.1 10.5 10.3
(a) Calculate the sample mean for solution 1.
(b) Calculate the sample standard deviation for solution 1.
(c) Calculate the sample mean for solution 2.
(d) Calculate the sample standard deviation for solution 2.
(e) Test the hypothesis
H
0
:
m
1
=
m
2
versus
H
1
:
m
1
â
m
2
.
Calculate
t
0
.
(f) Calculate a 95% two-sided confidence interval on the difference in mean etch rate.
Answer:
[tex](a)[/tex] [tex]\bar x_1 = 9.94[/tex]
[tex](b)[/tex] [tex]x_2 = 10.4[/tex]
[tex](c)[/tex] [tex]\sigma_1 = 0.395[/tex]
[tex](d)[/tex] [tex]\sigma_2 = 0.231[/tex]
(e) There is sufficient evidence to reject the claim that the mean etch rate is the same for both solutions
[tex](f)[/tex] [tex]-0.75644 < \mu_1 - \mu_2 < -0.1556[/tex]
Explanation:
Given
Solutions 1 and 2
Solving (a): Mean of solution 1
For Solution 1, we have the following data:
[tex]9.8\ 10.4\ 9.4\ 10.3\ 9.3\ 10.0\ 9.6\ 10.3\ 10.2\ 10.1[/tex]
The sample mean is calculated as:
[tex]\bar x = \frac{\sum x}{n}[/tex]
Where
[tex]n_1 = 10[/tex]
So, we have:
[tex]\bar x_1 = \frac{9.8+ 10.4+ 9.4+ 10.3+ 9.3+ 10.0+ 9.6+ 10.3+ 10.2+ 10.1}{10}[/tex]
[tex]\bar x_1 = \frac{99.4}{10}[/tex]
[tex]\bar x_1 = 9.94[/tex]
Solving (b): Mean of Solution 2
For Solution 1, we have the following data:
[tex]10.2\ 10.0\ 10.6\ 10.2\ 10.7\ 10.7\ 10.4\ 10.4\ 10.5\ 10.3[/tex]
The sample mean is calculated as:
[tex]\bar x = \frac{\sum x}{n}[/tex]
Where
[tex]n_2 = 10[/tex]
So, we have:
[tex]x_2 = \frac{10.2+ 10.0+ 10.6+ 10.2+ 10.7+ 10.7+ 10.4+ 10.4+ 10.5+ 10.3}{10}[/tex]
[tex]x_2 = \frac{104}{10}[/tex]
[tex]x_2 = 10.4[/tex]
Solving (c): Sample Standard Deviation of solution 1
This is calculated as:
[tex]\sigma_1 = \sqrt{\frac{\sum (x-\bar x_1)^2}{n_1-1}}[/tex]
This gives:
[tex]\sigma_1 = \sqrt{\frac{(9.8 - 9.94)^2+ (10.4- 9.94)^2+ (9.4- 9.94)^2+................+ (10.2- 9.94)^2+ (10.1- 9.94)^2}{10 - 1}}[/tex]
[tex]\sigma_1 = \sqrt{\frac{1.404}{9}}[/tex]
[tex]\sigma_1 = \sqrt{0.156}[/tex]
[tex]\sigma_1 = 0.39496835316[/tex]
[tex]\sigma_1 = 0.395[/tex] --- approximated
Solving (d): Sample Standard Deviation of solution 2
This is calculated as:
[tex]\sigma_2 = \sqrt{\frac{\sum (x-\bar x_2)^2}{n_2-1}}[/tex]
So, we have:
[tex]\sigma_2 = \sqrt{\frac{(10.2 - 10.4)^2+ (10.0 - 10.4)^2+ (10.6 - 10.4)^2+ (10.2 - 10.4)^2+.......................+ (10.3 - 10.4)^2}{10-1}}[/tex]
[tex]\sigma_2 = \sqrt{\frac{0.48}{9}}[/tex]
[tex]\sigma_2 = \sqrt{0.05333333333}[/tex]
[tex]\sigma_2 = 0.23094010766[/tex]
[tex]\sigma_2 = 0.231[/tex]
Solving (e): Test the hypothesis
[tex]H_0: \bar x_1 = \bar x_2[/tex]
[tex]H_1: \bar x_1 \ne \bar x_2[/tex]
Start by calculating pooled standard deviation
[tex]s_p = \sqrt{\frac{(n_1 - 1)*\sigma_1^2 + (n_2 - 1)*\sigma_2^2}{n_1 + n_2 -2}[/tex]
[tex]s_p = \sqrt{\frac{(10 - 1)*0.395^2 + (10 - 1)*0.231^2}{10+ 10-2}[/tex]
[tex]s_p = \sqrt{\frac{1.884474}{18}[/tex]
[tex]s_p = \sqrt{0.104693}[/tex]
[tex]s_p = 0.324[/tex]
Calculate test statistic
[tex]t = \frac{\bar x_1 - \bar x_2}{s_p\sqrt{\frac{1}{n_1} + \frac{1}{n_2}}}[/tex]
[tex]t = \frac{9.94 - 10.4}{0.324 * \sqrt{\frac{1}{10} + \frac{1}{10}}}[/tex]
[tex]t = \frac{-0.46}{0.324 * \sqrt{0.2}}[/tex]
[tex]t = \frac{-0.46}{0.324 * 0.4472}[/tex]
[tex]t = \frac{-0.46}{0.1448928}[/tex]
[tex]t = -3.175[/tex]
Calculate the degree of freedom
[tex]df = n_1 + n_2 - 2[/tex]
[tex]df = 10+10 - 2[/tex]
[tex]df = 18[/tex]
The p value is the in the column title of the student t distribution in row 18
[tex]p = 002621[/tex]
The p value is less than the significance level (0.05).
i.e.
[tex]p < 0.05[/tex]
So: Reject the null hypothesis
Solving (f): 95% two-sided confidence interval
[tex]c = 95\%[/tex]
Calculate the degree of freedom
[tex]df = n_1 + n_2 - 2[/tex]
[tex]df = 10+10 - 2[/tex]
[tex]df = 18[/tex]
Calculate [tex]\alpha[/tex]
[tex]\alpha = (1 - c)/2[/tex]
[tex]\alpha = (1 - 95\%)/2[/tex]
[tex]\alpha = (0.05)/2[/tex]
[tex]\alpha = 0.025[/tex]
Using student t distribution
[tex]t_{\alpha/2} = 2.101[/tex]
Calculate margin of error (E)
[tex]E = t_{\alpha/2} * s_p * \sqrt{\frac{1}{n_1} + \frac{1}{n_2}}[/tex]
[tex]E = 2.101 * 0.324 * \sqrt{\frac{1}{10} + \frac{1}{10}}[/tex]
[tex]E = 2.101 * 0.324 * \sqrt{0.2}[/tex]
[tex]E = 0.3044[/tex]
The boundaries of the confidence are:
[tex](\bar x_1 - \bar x_2) -E[/tex] [tex]= (9.94- 10.4) - 0.3044 = -0.7644[/tex]
[tex](\bar x_1 - \bar x_2) + E[/tex] [tex]= (9.94- 10.4) + 0.3044 = -0.1556[/tex]
The confidence interval is:
[tex]-0.75644 < \mu_1 - \mu_2 < -0.1556[/tex]
Which is true of Andrew Jackson’s life?
He was born in a log cabin to a poor family.
He was very unpopular and had trouble getting votes.
His father financed his candidacy for President.
He was a common man of middle income by the time he became President.
Your Answer is
He was a common man in the middle of income by the time he became the president
How did the development of the Silk Road benefit the Chinese economy?
A.
It decreased the cost of exporting goods.
B.
It enabled Chinese workers to migrate to job locations.
C.
It created access to an abundant supply of raw materials.
D.
It opened new markets for Chinese producers.
Answer:
A.
It decreased the cost of exporting goods.
How did people resist the Holocaust?
Answer:
by measuring it
Explanation:
........
Democratic structures and their definitions
A map titled Early Muslim Expansion showing Europe, Asia, Persia, the Arabian Peninsula, and Africa. Territory in 632 C E includes the western half and eastern coast of the Arabian Peninsula. Territory in 661 C E includes the rest of the Arabian Peninsula, most of Persia, and a small portion of the northern coast of Africa. Territory in 750 C E includes more of the northern coast of Africa, most of Spain, and extends from Persia in to Asia.
Study the map, then use the drop-down menus to complete the sentences.
Lands conquered by 632 CE was under the leadership of
.
Islam first spread across the Arabian Peninsula under
.
The Islamic caliphate reached its largest size in 750 CE, during the leadership of
.
Answer:
1] muhammad
2) Abu Bakr
3) the umayyads
Explanation:
Answer:
A map titled Early Muslim Expansion showing Europe, Asia, Persia, the Arabian Peninsula, and Africa. Territory in 632 C E includes the western half and eastern coast of the Arabian Peninsula. Territory in 661 C E includes the rest of the Arabian Peninsula, most of Persia, and a small portion of the northern coast of Africa. Territory in 750 C E includes more of the northern coast of Africa, most of Spain, and extends from Persia in to Asia.
Study the map, then use the drop-down menus to complete the sentences.
Lands conquered by 632 CE was under the leadership of
✔ Muhammad
.
Islam first spread across the Arabian Peninsula under
✔ Abū Bakr
.
The Islamic caliphate reached its largest size in 750 CE, during the leadership of
✔ the Umayyads
.
Explanation:
Topic sentence for Why did the north win
Answer:
The North was more industrial and produced 94 percent of the USA's pig iron and 97 percent of its firearms. The North even had a richer, more varied agriculture than the South. The Union had a larger navy, blocking all efforts from the Confederacy to trade with Europe.
Explanation:
How long does water stay in aquifers
Answer:
Estimated depth and residence time of the world's water supply
Soil Moisture ~2 weeks-1 year
Groundwater ~2 weeks-10,000 years
Ice caps/Glaciers 10-1000 years
Atmospheric water ~10 days
Answer:
2 weeks-10,000 years
Explanation:
Why might west African be the most populated
PLEASE HELP ME BEFORE WEDNESDAY!!
West Africa is home to 5 percent of the world's population. And that is because In the arable regions, where soils are fertile and the climate is favorable for crop cultivation, higher population densities are found.
What is one reason why the Ku Klux Klan targeted the Freedmen’s Bureau?
Klan members did not believe African Americans should be educated.
Klan members thought the Freedman’s Bureau was stealing from farmers.
Klan members were carpetbaggers who wanted to change the South.
Klan members wanted to stop the spread of racial violence across the South.
Answer:
Klan members did not believe African Americans should be educated.
Explanation:
I took the test
The reason why the Ku Klux Klan targeted the Freedmen’s Bureau is because A. Klan members did not believe African Americans should be educated.
What is the Ku Klux Klan?This is known to be an American white supremacist terrorist and hate group.
Hence, we can see that the KKK targeted the Freedmen's bureau because they did not believe African Americans should be educated and so was planned to be attacked.
Read more about the Ku Klux Klan here:
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I need help now please
Which of the following describes how many of the colonies responded after the Boston massacre
Answer:
if these are the answer Boston townspeople attacked and killed five British soldiers.
British soldiers attacked and killed five Boston townspeople.
British soldiers attacked Boston townspeople, who shot five soldiers dead.
Boston townspeople attacked British soldiers, who shot five colonists dead.
Explanation:
then the fourth on
Which factor contributed most to Japan's cultural development?
3. What was the name of the legal case in which the Supreme Court ruled that separate but equal was legal?
Answer:
Plessy vs. Ferguson was the name of the legal case in which the Supreme Court ruled that separate but equal was lega
When corporations and shareholders each pay taxes on the same money it is called __________ taxation.
A.
dual
B.
repeat
C.
double
D.
shadow
Answer:
It is C
Explanation:
Are spiders social animals?
Answer:
depends on the specie and age
Explanation:
spiders tend to be aggressive towards eachother and as they grow older they become less social
A positive attitude at work is important because?
Answer:
Positive attitudes can make the work environment happy and a joy to be in. ... A positive attitude keeps everyone trying new things, feeling brave about brainstorming new ideas, and makes people feel excited to go to work with their co-workers."
Explanation:
How do countries invest in capital goods
Answer:
below
Explanation:
Capital investment occurs when businesses purchase capital goods, which are tangible assets such as buildings, machinery, equipment, vehicles, and tools. These tangible assets are then used to produce goods or services. Capital investment is a means for a company to further its business objectives.
John Stuart Mill proposed the "harm principle," which basically is the idea that every individual should: a. be controlled by social institutions at all times to limit his/her ability to do harm. b. be imprisoned for life if they harm others or themselves. c. have the utmost freedom over their own actions unless they harm others. d. limit their behavior to that which is not harmful to any living thing.
Answer:
C. have the utmost freedom over their own actions unless they harm others.
Explanation:
The harm principle by stuart is the idea that people are free and have the right to act in whatever way them deem fit except what they do brings others to harm. Anything that can cause others harms is wrong and very wrong that the state can get involved to make sure that such does not occur again.
This idea is one tenet of liberalism, which is a philosophy in political science. This was proposed by John stuart Mill.
What are the differences in military strategy between the Romans and the Germans?
Indeed much of the key expansion of the Roman Empire occurred while it was still a Republic. Rome was an empire long before it was imperial. However, perhaps the key difference that the modern viewer sees between an imperial system and a republic is one of political participation and by extension legitimacy.
choose examples from the list below that best represent the increase of economic development in manufacturing industries in European countries and their colonies during the Industrial Revolution.
Answer:
A and B
Explanation:
(Q002) Trina has been having trouble paying her bills lately. She comes up with steps she can take to help balance her budget. First, she decides to make coffee at home instead of buying her daily latte at the expensive coffee shop near work. Then, she decides that her wardrobe is sufficient and she does not need to spend money on clothes for a while. These steps are an example of ________, which help(s) Trina solve her problem psychology.
Answer:
Subgoals.
Explanation:
Goal is a term used to describe the process of developing personal rules, acts, objectives and translating them into courses of action or an action plan.
This ultimately implies that, goal is a strategic technique used by various individuals or organizations to make an aggregate plan for either a short-term or long-term activities and action.
Also, subgoals are series of plans initiated and established based on main goals. Thus, subgoals are lesser goals that are an integral part of a greater goal.
In this scenario, Trina has been having trouble paying her bills lately. She comes up with steps she can take to help balance her budget. First, she decides to make coffee at home instead of buying her daily latte at the expensive coffee shop near work. Then, she decides that her wardrobe is sufficient and she does not need to spend money on clothes for a while. Thus, these steps are an example of subgoals, which helps Trina solve her problem psychology.
Which city established the first professional police force in the United States?
A.
New York
B.
Boston
C.
Philadelphia
D.
Albany
Answer:
THE RIGHT ANSWER IS NEW YORK CITY.Option A. New York.
.....
The large percentage of arable land is most helpflu to which industry in Cuba?
Your answer:
agriculture
manufacturing
tourism
Answer:
Manufacturing
Explanation:
Which of the following could be a disadvantage of living under an authoritarian government? OA. The education systems are usually very strict. OB. Citizens have very few rights and freedoms. OC. Citizens must help create government policies. OD Government leaders have little authority.
Answer:
B. Citizens have very few rights and freedoms.
Explanation:
An authoritarian government is also known as dictatorship and it can be defined as a type of government in which an individual who is a sole administrator is responsible for controlling, managing and directing the affairs of the particular country. Therefore, they do not listen to anyone else but rather are saddled with the decision-making responsibilities without consulting any other government official.
The disadvantage of living under an authoritarian government that citizens have very few rights and freedoms.
Generally, citizens living in a country or society that practices an authoritarian government are usually lacking in individual freedoms because the supreme leader ignores rules limiting his or her power with respect to the citizens and institutions.
Some examples of authoritarian government around the world are the government of Idi Amin of Uganda, Adolf Hitler of Nazi Germany, Joseph Stalin of the Soviet Union etc.
True or False: Disease in the circulatory system does not affect other organ systems, such as the muscular system. *
True
False
Answer:
False
Basic fact:
the circulatory system is a system that contains the heart and the blood vessels and moves blood throughout the body
Explanation:
since it is a heart and blood vessel it moves blood around the body
if there is a disease in there it spreads all around the body through the blood
Think About it!
How do the Moon, Earth and Sun compare in size? Explain your thoughts in your science notebook.
Explain:
Do it!
Sentence stems
I think it will take the Moon _________ days to revolve around the Earth.
I think it would take the Earth ________ days to revolve around the Sun.
Understanding!
Summarize the understanding section:
Apply it!
1. The marble represents the____________ because_____________.
2. The basketball represents the ______________ because _________________.
3. The Christmas ornament represents the _________________ because __________________.
(science) I NEED IT ASAP PLEASE
Answer:
Now some eclipses of the sun by the moon are total, and some are annular, as seen from Earth. ... Bottom line: The sun's diameter is about 400 times larger than that of the moon – and the sun is also about 400 times farther from Earth. So the sun and moon appear nearly the same size as seen from Earth
1.4
"Sometimes conflict can be healthy". Critically discuss this statement
Answer:
yes because you may know or learn what you did not know from tha conflict and I personally think that it is good something to screem something not everyday
Conflict can be healthy at times because when controlled, it leads to strengthen relationships, teams and leads to better solutions and growth.
A Conflict refers to a deliberate action where one person or group attempts to thwart the actions of another
Even at workplaces, controlled conflict are seen as necessary to build a healthy part of personal and professional relationships
In conclusion, a conflict can be healthy at times because when controlled, it leads to strengthen relationships, teams and leads to better solutions and growth.
Read more about Conflict
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