Suppose the sediment density (g/cm) of a randomly selected specimen from a certain region is normally distributed with mean 2. 65 and standard deviation. 85 (suggested in "modeling sediment and water column interactions for hydrophobic pollutants," water research, 1984: 1169–1174).
a. If a random sample of 25 specimens is selected, what is the probability that the sample average sediment density is at most 3. 00? between 2. 65 and 3. 00?
b. How large a sample size would be required to ensure that the first probability in part (a) is at least. 99?
Answers
A.
Using a standard normal distribution table, we can find that P(Z ≤ 2.06) = 0.9798.
So the probability that the sample average sediment density is at most 3.00 is approximately 0.9798 or 97.98%.
ii) To find the probability that the sample average sediment density is between 2.65 and 3.00, we can standardize the variable as follows:
z1 = (2.65 - μ) / (σ/√n) = (2.65 - 2.65) / (0.17) = 0
z2 = (3.00 - μ) / (σ/√n) = (3.00 - 2.65) / (0.17) = 2.06
Using a standard normal distribution table, we can find that P(0 ≤ Z ≤ 2.06) = P(Z ≤ 2.06) - P(Z < 0) = 0.9798 - 0.5 = 0.4798.
So the probability that the sample average sediment density is between 2.65 and 3.00 is approximately 0.4798 or 47.98%.9.
B.
P(Z ≤ z) = 0.99
Using a standard normal distribution table or a calculator, we can find that z ≈ 2.33.
Then we can solve for n as follows:
2.33 = (3.00 - 2.65) / (0.85/√n)
Simplifying this equation, we get:
n = [(2.33*0.85)/0.35]^2 ≈ 36.46
So a sample size of at least 37 is required to ensure that the probability of the sample average sediment density being at most 3.00 is at least 0.99.
Related Questions
Describe the purpose and use of the talk test.
Answers
Answer:
The talk test is used to measure moderate-intensity activities. If a person can talk during an activity, but cannot sing, they are engaged in moderate-intensity activity. If they cannot talk, they are doing a higher-level intensity activity. If they can sing, they are doing a low-intensity activity.
Hope this helps!
What is the sub-group of AA that helps young people come together to share their experiences of having been affected by someone else’s drinking?
Answer:
Answers
Answer:
The sub-group of AA that helps young people come together to share their experiences of having been affected by someone else's drinking is called Al-Anon. Al-Anon is a 12-step program for people who have been affected by someone else's drinking, including children, spouses, partners, parents, and friends. Al-Anon meetings are held all over the world, and they are free to attend.
Al-Anon is based on the idea that alcoholism is a family disease, and that everyone in the family is affected by the alcoholic's drinking. Al-Anon meetings provide a safe space for people to share their experiences, feelings, and fears about alcoholism. Meetings also provide information about alcoholism and how to cope with its effects.
Explanation:
Zach looked at data displayed in a table on his local health district. People were asked questions about certain health behaviors. It compared the number of people answering “yes” in Zach’s district to the state average.
CANN SoME ONE HELP ME WITH MY k12 quiz??
Answers
But Is there a chart or anything?
Which statement about protein is true?
Responses
Teenagers should eat about five to six ounces of protein each day.Teenagers should eat about five to six ounces of protein each day.
Meat is the only source of protein.Meat is the only source of protein.
Athletes should be especially careful to limit their protein intake.Athletes should be especially careful to limit their protein intake.
Eating a high-protein diet makes it possible to skip fruits and vegetables
Answers
Answer:
Teenagers should eat about five to six ounces of protein each day.
Explanation:
Teenagers need lots of protein since they are more active, and most are still developing.
What does alcohol do to your body?
Answers
bruh do any of you know what I could do to make my calfs feel better lol (The body part on your leg) because I worked out yesterday and the day before that and they hurt.
Answers
Answer:
Strech, and don't stay stiff
Explanation:
strech before and after you workout. If you don't do this please do. It's very important so you don't hurt yourself. and don't stay stiff. move around so the pain doesn't stay there and your just laying stiff doing nothing about it. also drink a lot of water and stay hydrated
ℍ! ℍ '? . , ℕ , , , , .
Answers
Answer: hellooooooooooooooo
Answer:
Oh, oh
Oh, I can't get it back
But I don't want it back
I realized that she don't know how to act
Never been a du m b dude, no, I'm not dense
I just had a slight lack of common sense
I was the good guy
She was the bad girl
I'm thinking one girl
She thinking me, Earl, James, and Jimmy
Yep, she had plenty
But love for me, she didn't have any
I was inviting (her into my heart)
Hmm, but she was out riding (in some other man's car uh)
She was my night time (thought I was her star)
Guess I was wrong, but see, I'm strong
Won't take long for me to move on
Oh, please, don't worry 'bout me, I'm fine
(Please, don't worry 'bout me, I'm fine)
Only gonna play the fool one time
(Only gonna play the fool one time)
Trust me when I say that I'll be okay
Go on, girl (go on, girl)
Go on, girl (go on, girl)
Go on, girl
I can't get it back
But I don't want it back
I realized that she don't know how to act
Tried to settle down and look what I get
Thought it was my time, but I guess not yet
She at the b a r getting drinks from many men
I'm in the house, thinking she's with her gi rlfri end s
Just not knowin', truly not knowin'
I look back now like, "Man, I was open"
I was inviting (her into my heart), hey
But she was out riding (in some other man's car)
She was my night time (thought I was her star)
Guess I was wrong, but see, I'm strong
Won't take long for me to move on
Oh, please, don't worry 'bout me, I'm fine
(Please, don't worry 'bout me, I'm fine)
Only gonna play the fool one time
(Only gonna play the fool one time)
Trust me when I say that I'll be okay
Go on, girl (go on, girl)
Go on, girl (go on, girl)
Go on, girl
Ooh, the mistake I made was clear
(We never should've been together)
That's the reason you're not here
(I know that I can do much better)
Hey, not a single salty tear
Not a feelin' in my chest
Baby, I'm feelin' no stress
I'm too fly to be depressed
Go on, girl (go on, girl)
Go on, girl (go on, girl)
Mmm
Go on, girl, go on, girl
Oh, oh, oh, oh, hey, oh
Please, don't worry 'bout me, I'm fine
(Please, don't worry 'bout me, I'm fine)
Only gonna play the fool one time
(Only gonna play the fool one time)
Trust me when I say that I'll be okay
Go on, girl (go on, girl)
Go on, girl (go on, girl)
Go on, girl
Oh, please, don't worry 'bout me, I'm fine
(Please, don't worry 'bout me, I'm fine)
Only gonna play the fool one time
(Only gonna play the fool one time)
Trust me when I say that I'll be okay
Go on, girl (go on, girl)
Go on, girl (go on, girl)
Go on, girl
Mmm, go on, girl, go on, girl, go on, girl
I'll be fine
Explanation:
This is like basic anatomy. blood types and stuff. Please just tell me where everything should go
Answers
Answer:
3. anti-A
Explanation:
4.Agglutination is the clumping of particles. The word agglutination comes from the Latin agglutinare. Agglutination is the process that occurs if an antigen is mixed with its corresponding antibody called isoagglutinin. This term is commonly used in blood grouping
(please vote me brainliest)
Answer:
Almost all B antibodies few of others though. Look it up to see full answers.
Question 13 (1 point)
To stop severe bleeding, you should first cover the wound in gauze and then position the wound higher than the heart to slow blood loss.
True
False
Question 14 (1 point)
Most people who are stung by insects can be treated at home, but people who experience anaphylaxis require immediate emergency care.
True
False
Question 15 (1 point)
After moving electrical wires and checking that a person with electrical shock is safe, you then call 911.
True
False
Question 16 (1 point)
Automated external defibrillators and Hands-Only CPR should be used only by people with training to restore breathing and heartbeat.
True
False
Answers
Answer: False, and then the rest after that are true
Answer:
Question 13 Answer: True
Question 14 Answer: True
Question 15 Answer: False
Question 16 Answer: True
Please help me with no lying
Answers
Answer:
what do you need help with
Explanation:
What is meant by a lawful society
Answers
Explanation:
Law is created and put into practice through societal processes. Simultaneously law effects and affects social change. Beyond a causal relationship, law is further understood to constitute social institutions such as the polity, family, property, corporation, crime, even the individual
The nicotine in tobacco is very addictive. Based on the facts, how would you react if a friend said to you, " No way, I won't get addicted"?
Answers
PLEASE NEED DONE TODAY!! (PE not health) Directions: Imagine you work for a sports magazine. You are doing a feature article on an athlete of your choice. Your article must be written in your own words. It needs to be at least two fully developed paragraphs in length and include the following information:
Provide the following information about your game:
1. Name of athlete (2 pts)
2. Sport, team, and position he/she plays (3 pts)
3. Background information about athlete (can include info about when/where he/she grew up, current city of residence, family life, interests & hobbies, etc) (5 pts)
4. Major sporting accomplishments (3 pts)
5. Why do you think this athlete should or should not be considered a role model? (3 pts)
6. List at list two sources where you found your information (if websites, be sure to include the web address) (4 pts)
Type your athlete bio below:
Source #1
Source #2
Answers
Answer:
there's an app called shortly, I believe it helps with writing essays!!
Answer: Don't have an idea.
is it true that humen have 5 scenes
Answers
Answer:
Humans have 5 senses
Explanation:
Touch Smell vision hearing Touch
using the following answer the following questions:
Fruits Vegetable Grains
You're doing great! You're doing great! You're doing great!
Protein Foods Dairy
You may need some help with Protein Foods. You're doing great!
How does your current diet compare with this plan?. (5 points – Full paragraph response required)
What changes can you make to your diet to better follow this recommended daily food plan? (6 points – Full paragraph response required)
Answers
Answer:
How does your current diet compare with this plan?.
-------------------------------------------------------------
Include exercise.
Allow a variety of foods from all the food groups.
Be created by a credentialed professional.
Promote slow and steady weight loss.
Include portion control.
Allow snacks between meals.
Not rely heavily on supplements.
----------------------------------------------------------
What changes can you make to your diet to better follow this recommended daily food plan?
---------------------------------------------------------
Keep more fruits, low-fat dairy products (low-fat milk and low-fat yogurt), vegetables, and whole-grain foods at home and at work. ...
Try to eat a family meal every day at the kitchen or dining table. ...
Buy a healthy-recipe book, and cook for yourself.
If this helped make sure to mark brainliest and thank you.
What should you do if you find a bulging or damaged can in the pantry?
Answers
Answer:
Discard the cans.
Explanation:
You must discard the cans if you can lay your finger in the dent, that's too deep. It's better to be safe and discard or return the can. Swollen cans often indicate a spoiled product. During spoilage, cans may progress from normal to flipper, to springer, to soft swell, to hard swell. However, spoilage is not the only cause of abnormal cans. Overfilling, buckling, denting, or closing while cool may also be responsible.
It can cause difficulty breathing, muscle paralysis, and even death. The toxin is made most often by Clostridium botulinum bacteria. Improperly canned, preserved, or fermented foods can provide the right conditions for the bacteria to make the toxin.
genshin impact PLAYERS I PULLED 2 10 ROLLS AND GOT 5 STAR WEAPONS WHAT IS LIFE. ＞︿＜
Answers
Answer:
Life is an illusion
Explanation:
It doesn't exist we are in an infinite tsukiyomi
Explain how the food groups overlap with a food like pinto beans.
Answers
Question 3 (1 point)
Storing chemicals in original containers in a locked area and wearing protective equipment when using chemicals can prevent injury.
True
False
Question 4 (1 point)
Putting a fire blanket over flames will remove the heat of a fire, which causes it to stop burning.
True
False
Question 5 (1 point)
Testing smoke detectors monthly and changing smoke detector batteries yearly is important when conducting a fire safety inspection.
True
False
Question 6 (1 point)
Emergency supplies should be stored in a locked cabinet so they are out of children’s reach.
True
False
Answers
Answer: All are true
Explanation: I learned this when I was in HOSA, PE, and Health Class. Trust me
Hope this helps
--Wavey
What terms describes how we determine the goodness or evil of what we do or how we behave in situations?
Answers
Answer:
Morals
Explanation: They are the basic foundation for all decisions big or small. They are the reason we keep living because we feel like we should. They guide us through life and to death.
Human (moral) acts are acts which are chosen by exercising one’s free will as a consequence of a judgment of conscience. Human acts are moral acts because they express the good or evil when someone is performing them.[1] The morality of acts is defined by the choices that one makes in accordance with the authentic good, which is based on the eternal law that has a desire for God as our end goal. This external law is the “natural law” based on God’s Divine Wisdom, made known to us through His supernatural revelation[2]. A human act is thus morally good when we make choices coherent to our true good and brings us closer to God.
The goodness of a moral act is assessed based on three conditions: object (and its goodness), intention (or end as expressed by Saint Thomas Aquinas), and circumstances[3]. For a moral act to be considered good, all three conditions must be met. A defect in any of these three conditions causes the act to be deemed morally evil[4].
Which of these is a controllable risk factor for diseases?
Answers
hygiene is how clean/ dirty you are. and you can control that. you could take a bath or roll in mud.
Answer:
Poverty.
Explanation:
It is a condition in which one is weak to get too the least basic needs of living example food, clothing and shelter. An individual is acknowledged unfortunate if he is not capable to satisfy his basic needs but the individual could control the risk by the use of natural material around nature.
people keep telling me being lesbian will make me go to hell is that true?
Answers
Answer:
No, it isn’t.
Explanation:
They don’t support lesbians people.
Answer: NOOOO
Explanation:
Some people are just inconsiderate and if they could just be a little more thoughtful of others the world might be even just a little bit better. You will not go to hell for a feeling towards other people. These are the same people that think the earth is flat. Please don’t listen to them.
WORTH 40 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer: it is worth 20 liar but anway i will still answer it
Explanation: 1,6,9
1. Anorexia
Anemic
N ot going to live very long
O nly surviving
Relapsing
Emicated
X starving to death
I gnored
C old
I did 1
Health
Medical
Doctor
Physical
Gradually adding to the number of exercises you perform is
a. Stamina
b. Regularity and Specificity
c. Overload and Progression
Answers
Answer:
A
Explanation:
This seems like the best answer. Let me break it down for you:
Stamina is the ability to sustain prolonged physical or mental effort.
Regularity and Specificity just refer to how much you do and what you do.
Overload and Progression refers to if your doing too much and at what rate.
Answer:
A
Explanation:
I think its right tell me if it's wrong pls! :)
Josh has a friend who avoids celebrating holidays due to his religious beliefs. Josh asked his friend to come over for a holiday party and his friend declined.
Why is it important for Josh to understand the feelings and perspectives of others?
Select all correct answers.
If Josh wants people to respect him, he should also show respect to others.
Part of maturing is to realize that different people have different opinions.
Josh may win a behavior award at school if he shows respect for others.
Josh may lose friends if he doesn’t understand the perspectives of others.
Answers
Answer:
Josh may lose friends if he doesn’t understand the perspectives of others, Part of maturing is to realize that different people have different opinions, If Josh wants people to respect him, he should also show respect to others.
Explanation:
The only incorrect one is the behavior award at school, because he has to realize how it affects others, not hinself. The others are correct.
Queston is in picture
Answers
Answer:
B
Explanation:
The article shows that the planet is suitable for habitation
Anaphylactic shock is seen most commonly in response to _____________.
viral infections
food
insect bites
sunlight
medications
select multiple
Answers
Answer:
food
Explanation:
Anaphylactic shock is a rare but severe allergic reaction that can be deadly if you don't treat it right away. It's most often caused by an allergy to food, insect bites, or certain medications. A shot of a drug called epinephrine is needed immediately, and you should call 911 for emergency medical help.
Answer:
Food, insect bites, medications
Explanation:
Foods you're allergic to (e.g. eggs), insects you're allergic to (e.g. bees), and medications you're allergic to (depends on the ingredients in the medicine). It can cause from sunlight as welll, but this is extremely rare considering being allergic to sunlight is also extremely rare, but the question asks for the "most common" causes.
What is a benefit of living in a mixed-use development over a suburb
Answers
Answer:
The creation of better spaces, more affordable, and safer neighborhoods that are accessible on foot is made possible by the establishment of mixed-use developments. Green space creation or preservation is favored by reducing urban use areas. They use less energy and produce fewer emissions.
Explanation:
Hope you found this answer helpful!
Answer:
It is cheaper safer with accesability of foot trafic
Question 3 (1 point)
Indirect transmission is the movement of a pathogen from a person with a communicable disease to a susceptible person.
True
False
Question 4 (1 point)
Treatment with antibiotics is effective against bacterial infections, but they do not work against viruses, fungi, and protozoa.
True
False
Question 5 (1 point)
Many noncommunicable diseases are chronic illnesses that usually heal once they go into remission.
True
False
Question 6 (1 point)
Making healthy lifestyle choices and forming healthy habits now can reduce your risk of developing cancer later in life.
True
False
Question 7 (1 point)
Asthma and chronic obstructive pulmonary disease cannot be cured, but medications can help manage the conditions and symptoms.
True
False
Answers
Answer:
1.True
2.false
3.True
4.True
Explanation:
Question 4: True. Treatment with antibiotics is effective against bacterial infections, but they do not work against viruses, fungi, and protozoa.
Question 5: False. Many noncommunicable diseases are chronic illnesses, but they do not necessarily heal once they go into remission. Some noncommunicable diseases, such as diabetes or hypertension, require ongoing management and may not have a permanent cure.
Question 6: True. Making healthy lifestyle choices and forming healthy habits can indeed reduce the risk of developing cancer later in life.
Question 7: True. Asthma and chronic obstructive pulmonary disease (COPD) cannot be cured, but medications can help manage the conditions and symptoms, allowing individuals to lead better lives with proper treatment.
T
F
T
T
T
(30 points) Pick 2 Vitamins to research and give the following information: Name of the vitamin, symptoms of deficiency, symptoms of overdose, function served in the body.
Answers
Deficiency: Bleeding gums, bleeding under skin
Overdose: Nausea, vomiting, diarrhea
Vitamin C is used to help repair tissue in your body.
Vitamin D
Deficiency: Bone pain, hair loss, bone/muscle weakness
Overdose: Confusion, abdominal pain, frequent urination
Vitamin D helps reduce inflammation, as well as assist in cell growth.
Although biotin deficiency is rare, the following may include: hair loss, dry-scaly skin, cracking in corners of mouth (cheilitis), swollen and painful tongue (+magenta in color;glossitis), dry eyes, loss of appetite, fatigue, insomnia and depression
Symptoms of possible overdose may include the following: insomnia, excessive thirst and frequent urination
Purpose: metabolize carbs., fats and amino acids-all building blocks of protein
2. Although iron deficiency is rare, the following may include: dizziness, fatigue, lightheadedness, fast heart rate or palpitations, brittle nails, pallor or shortness of breath
Symptoms of possible overdose may include the following: upset stomach, constipation, nausea, vomiting, abdominal pain and diarrhea
Purpose: make hemoglobin, a protein in red blood cells that carry oxygen from the lungs to all parts of the body, and myoglobin, a protein that provides oxygen to the muscles