A social scientist believed that less than 30 percent of adults in the united states watch 15 or fewer hours of television per week. To test the belief, the scientist randomly selected 1,250 adults in the united states. The sample proportion of adults who watch 15 or fewer hours of television per week was 0. 28, and the resulting hypothesis test had a p-value of 0. 61. The computation of the p-value assumes which of the following is true?
Answers
The computation of the p-value that is true is; The population proportion of adults who watch 15 or fewer hours of television per week is less than 0.30.
What is the p-value of the hypothesis?Let the proportion of adults watching television less than or equal to 15% be x
30 percent of adults in the united states watch 15 or fewer hours of television per week. Thus;
Null Hypothesis; H₀: x = 30% = 0.30
Alternative Hypothesis; H₁ : x < 30% , or x < 0.30
Formula for the z-score is:
z = p' - [√{p₀(1 - p₀)/n}]
where;
p' = 0.28, p₀ = 0.30, p₁ = 0.70
Using online p-value from z-score calculator we have;
p(z < -1.543) = 0.061
If we assume 10% level of significance, i.e p = 0.10
Thus, p-value 0.061 < 0.10 and we reject Null hypothesis and accept the alternative hypothesis.
Finally, we conclude that the proportion of adults watching television less than or equal to 15% < 30% or 0.30'
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Related Questions
The breaking strengths of cables produced by a certain manufacturer have a standard deviation of 92 pounds. A random sample of 90 newly manufactured cables has a mean breaking strength of 1700 pounds. Based on this sample, find a 95% confidence interval for the true mean breaking strength of all cables produced by this manufacturer. Then give its lower limit and upper limit. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place
Answers
Answer:
To find the 95% confidence interval for the true mean breaking strength of all cables produced by the manufacturer, we can use the formula:
Confidence Interval = Sample Mean ± (Critical Value * Standard Error)
First, let's calculate the standard error, which is the standard deviation divided by the square root of the sample size:
Standard Error = Standard Deviation / √(Sample Size)
= 92 / √(90)
≈ 9.685
Next, we need to determine the critical value corresponding to a 95% confidence level. Since the sample size is large (n > 30), we can use the z-table. The z-value for a 95% confidence level is approximately 1.96.
Now we can calculate the confidence interval:
Confidence Interval = Sample Mean ± (Critical Value * Standard Error)
= 1700 ± (1.96 * 9.685)
Lower Limit = 1700 - (1.96 * 9.685)
≈ 1679.69
Upper Limit = 1700 + (1.96 * 9.685)
≈ 1720.31
Therefore, the 95% confidence interval for the true mean breaking strength of all cables produced by this manufacturer is approximately (1679.7, 1720.3). The lower limit is 1679.7 pounds, and the upper limit is 1720.3 pounds.
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.
A trapezoid is shown in the coordinate plane.
Which of the following gives the line or lines of symmetry about which the trapezoid can be reflected in order to map the trapezoid onto itself?
Answers
The line or lines of symmetry about which the trapezoid can be reflected in order to map the trapezoid onto itself is x = -2.
What is symmetry?Symmetry is defined as a likeness between two parts of an object that is equal and balanced. Planar symmetry, which refers to various types of symmetry on a flat surface, is illustrated by the four different types of symmetry.
A figure's symmetry line is the path it takes to transfer itself onto another figure. The midpoints of the parallel sides in the provided figure are (1, 4) and (-2, -2), and the trapezoid's symmetry line is at x = -2.
Thus, the line or lines of symmetry about which the trapezoid can be reflected in order to map the trapezoid onto itself is x = -2.
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What is a pastoral society?
Answers
Answer:
A pastoral society is a group of people that are always moving.
Explanation:
People usually tend flocks of animals.
Answer:
A pastoral society is a social group of pastoralists, whose way of life is based on pastoralism, and is typically nomadic. Daily life is centered upon the tending of herds or flocks.
Explanation:
Envision algebra 2 common core assessment readiness workbook answers
Answers
Common Core Assessment Readiness workbook for Algebra is a tool that typically contains a series of exercises, problems, and activities that are designed to reinforce what you have learned in class or through other sources.
How can you prepare for Common Core Algebra assessment?
Know the standards: Familiarize yourself with the Common Core Algebra standards.
Practice with sample questions: The Common Core State Standards also provides sample questions for each grade level. You can use these questions to gauge your readiness for the assessment and identify areas where you may need more practice.
Use study guides: There are many study guides available that can help you prepare for the Common Core Algebra assessment
Take quizzes: There are many quizzes available that can help you practice for the Common Core Algebra assessment.
Work with a brainly tutor: If you're struggling with certain concepts, consider working with a brainly tutor who can provide personalized instruction and help you strengthen your skills.
Note that practice will build your confidence levels also explore study strategies. You can search study strategies on brainly.com.
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Some common ways that criminals try to pressure people into falling for a scam include creating a sense of urgency,appealing to your emotions and__ (everfi)
1) making an offer that needs to be compared with other products to see if it is a good deal
2)by threatening physical violence
3)meeting in person to build trust
4)making an offer that seems too good to be true
Answers
Witch planet has the most largest an most complex ring
Answers
Answer:
Saturn
Explanation:
Saturn, the sixth planet from the Sun, has the most spectacular set of rings in the solar system. We now know that Saturn has 82 moons in addition to its complex ring system.
How does the conflict "character versus nature" tie into the theme of the story? The Grasshopper and The Ant
Answers
The conflict of character versus nature is an external conflict in literature. It is frequently represented as a person battling the environment, including natural disasters, wild animals, or the natural world's destructive side.
In The Grasshopper and The Ant, this conflict ties into the story's theme in a variety of ways.
To begin with, the narrative depicts how nature, in this case, the environment, can have an impact on our lives. Throughout the story, the grasshopper avoids the ant's attempts to prepare for the winter, preferring to sing and dance.
When the winter arrives, the grasshopper is caught unprepared and ends up hungry and freezing. The story's moral teaches readers that being ill-prepared can be disastrous, especially when it comes to nature. It also highlights the importance of being proactive in preparing for the worst.
Another way the character versus nature conflict ties into the story's theme is by highlighting the ant's perseverance and hard work. Despite the harsh circumstances, the ant remains determined and dedicated to his goal of preparing for the winter. This serves as an inspiration to readers to persevere even in the most challenging situations.
Furthermore, the story shows how nature can be both harsh and benevolent. The grasshopper suffers due to the harsh winter, but the ant's hard work also pays off in the end when he can enjoy the fruits of his labor. This teaches readers that nature can both give and take away.
Finally, the conflict of character versus nature in The Grasshopper and The Ant serves to teach readers about the importance of balance. The ant's hard work and preparation are admirable, but the grasshopper's love of life and music is also crucial. This emphasizes that while it's essential to be prepared, it's also necessary to enjoy life and not take it for granted.
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Which sentence indicates an effort to make sure that the
study used similar samples?
SELECT AN ANSWER
O For one term, two sections of the same psychology
lecture course, taught by the same professor a Rutgers
University, participated in a tech experiment.
O in the second, students could use phones, tablets, and
laptops however they wanted they just had to fill out
a survey afterward Indicating whether they used their
tech for academic or non-academic purposes.
To track both sections' absorption of the material,
researchers measured the students' performance on
in-lecture assessments and on course exams.
They found that while using technology during class did
affect performance, it didn't happen right away.
Answers
The first sentence indicates an effort to make sure that the study used similar samples which is for one term, two sections of the same psychology lecture course, taught by the same professor a Rutgers University, participated in a tech experiment.
What is sample?
A sample, in general, is a small amount of something that is meant to be similar to and reflect a greater amount of that thing (s). The things could be countable objects like individual products for sale in units or an uncountable stuff. Even though the term "sample" indicates a smaller quantity taken from a larger amount, entire biological or mineralogical specimens are occasionally referred to as samples if they are taken for examination, testing, or study in the same way that other samples are. They are also samples in the sense that whole specimens are "samples" of the entire population of numerous individual species.
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A scientist is studying the average speed and fastest recorded speed of four creatures. His results, in miles per hour, are shown in the table below.
For which creature is the difference between average speed and fastest speed the greatest?
Werewolf
Phoenix
Mermaid
Centaur
They are all the same.
Answers
The __________ nervous system is responsible for our fight-or-flight response. A. autonomic B. parasympathetic C. somatic D. sympathetic
Answers
Answer:
D (pretty sure but might be A??)
Explanation:
autonomic- role in your physical responses in situations of stress
the autonomic nervous system is divided into two systems: sympathetic and parasympathetic. SNS (sympathetic) is responsible for your fight-or-flight: it signals your adrenal glands to release the hormones epinephrine (adreneline) and cortisol (endocrine system). these two hormones trigger many reactions of autonomic nerves (dilated blood vessels, faster heartbeat, etc). SNS is a pretty sudden response which triggers your reactions and controls fight-or-flight. (im pretty sure i mean this is what i remember sorry if this didnt help)
Answer:
D. sympathetic
Explanation:
When facing down a ferocious lion, an oncoming car or maybe just an impending deadline, our bodies trigger a physical stress response that prepares us to either fight or flee the scene. This "fight-or-flight" response is driven by the sympathetic nervous system, a normally harmonized network of brain structures, nerves and hormones that, if thrown off balance, can result in serious complications
Three reasons why lron cannot be used to make a replacement joint
Answers
Iron's susceptibility to corrosion, poor biocompatibility, and lack of mechanical strength make it unsuitable for use in replacement joints.
First of all, iron is very prone to corrosion when exposed to moisture and oxygen, which might eventually cause the joint to degrade. The joint may become unsuitable for long-term usage in the human body due to corrosion, which can degrade the joint's structural integrity and affect its functionality.
Second, iron has poor biocompatibility, which means that when it comes into touch with live tissues, it may result in unfavourable reactions and tissue responses. This may cause inflammation, immunological reactions, and even the immune system of the body rejecting the joint. Materials with strong biocompatibility are selected to guarantee a successful replacement joint to reduce the risk of problems and enhance patient outcomes.
The mechanical strength needed for a replacement joint is also lacking in iron. In order to endure the loads and forces that joints are subjected to during movement, a material must be strong enough. Iron is a powerful metal, but it might not have the best mechanical qualities, such as high tensile strength, fatigue resistance, and longevity, needed for a joint replacement.
These factors lead to the use of other materials, such as titanium alloys or cobalt-chromium alloys, which provide higher corrosion resistance, biocompatibility, and mechanical qualities suited for long-term usage in the human body.
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Which stage happens before the flower forms?
A.
It forms fruit.
B.
It receives pollen.
C.
It sprouts.
D.
It produces seeds.
Answers
Answer:
I would say it forms a fruit
x^3 -x^2-32x+60= k(x-2) then what is k equivalent to
Answers
Answer:
21
Explanation:
I needed points sorry
What is the difference between GPA and cumulative GPA?
Answers
Answer:
The difference is that the cumulative GPA covers shorter periods, like a term or a semester. The overall GPA refers to the average grades obtained by a student throughout his entire academic experience. This means the overall GPA includes grades from all terms and semesters.
(Copied from google)
hope that helps
Can you figure out UG*IY*PVB*IUH *VDBA*IN(OIYZBu9w8irovbcuu8IYHT8IOAREUCNJIIRHFJOEFJEOFJMihgogkdnzkHDOFHDAOIFH;osj?
Answers
Answer:
b
Explanation:
1. विशेषण शब्द किन शब्दों की विशेषता बताते हैं?
Answers
Answer:
okkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk
What number is 16% of 60
Answers
Answer:
9.6
Explanation:
Answer:
9.6
Explanation:
16 x 60/ 100 = 16 x 6/10 = 9.6, hope this helps :D
rose are _____ viliot are ____
a. red and blue
B. apple and red
Answers
I hope this helps.
intro paragraph for the book 13 and the story in the book if you kiss a boy
Answers
Why did the US voted for joe and not trump for this year's election?
Answers
Answer:
Explanation:
Most people think that Trump is racist and is a cause for rioteing, but joe did give billions of money to china to controll our electricity, and wanted to take down the Monro doctrine, but yeah people just didn't like trump.
I made sure not to put my personal opinion in this thank you
Approximate the difference of the medians as a multiple of carl's interquartile range.
Answers
The formula to approximate the difference of the medians as a multiple of Carl's interquartile range is (median2 - median1) / (0.7413 x IQR).
To approximate the difference of the medians as a multiple of Carl's interquartile range, you must first find the medians of the two data sets being compared. Next, calculate the absolute difference between the medians. Then, determine Carl's interquartile range by subtracting the first quartile value from the third quartile value. Finally, divide the difference of the medians by Carl's interquartile range. The result will give you the multiple you are looking for. The formula to approximate the difference of the medians as a multiple of Carl's interquartile range is (median2 - median1) / (0.7413 x IQR). To approximate the difference of the medians as a multiple of Carl's interquartile range, you must first find the medians of the two data sets being compared.
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Find the probability of getting 6 or more girls in 8 births.
Answers
Answer:
The probability of getting a girl is 12 . The probability of getting 6 girls is therefore (12)6 . Since we have 6 girls, we also need to find the probability of getting 2 boys, which is (12)2 . There are (86)=28 ways to get 6 girls out of 8 children.
Explanation:
Answer:
Explanation:
P(X > 6) = ?
P(X > 6) = P(X = 6) + P(X = 7) + P(X = 8)
P(X > 6) = 0.118 + 0.035 + 0.004
P(X > 6) = 0.157
Thus the probability of getting 6 or more girls in 8 births is 0.157
If both independent and dependent variables can change in an experiment, what is the difference
between them?
A) A dependent variable is the variable a scientist chooses to change.
B) An independent variable is the variable a scientist chooses to change.
C) An independent variable changes depending on the constants used in the experiment.
it sc
Answers
Answer:
B
Explanation:
Independent variable- The variable being manipulated by the researcher
Dependent variable- The variable that is dependent on the changes made by the researcher. The dependent variable is not directly changed but may be influenced by changes made to the independent variable.
Create a procedure named extended_sub that subtracts two binary integers of arbitrary size. The storage size of the two integers must be the same, and their size must be a multiple of 32 bits. Write a test program that passes several pairs of integers, each at least 10 bytes long
Answers
A procedure named extended_sub that subtracts two binary integers of arbitrary size. The storage size of the two integers must be the same, and their size must be a multiple of 32 bits. Write a test program that passes several pairs of integers, each at least 10 bytes long is given below.
What is a procedure?In computer programming, a procedure is a standalone code module that completes a specific task and is referred to within a larger body of source code.
Functions and subroutines are other names for this type of code item. The primary function of a procedure is to provide a single point of reference for some minor objective or task, which the developer or programmer can start by using the procedure itself.
The terms function, subroutine, routine, method, and subprogram can all be used to refer to a procedure. To make code more effective, the fundamental concept of a code procedure was developed. Many early linear code programs lacked the adaptability and sophistication needed to support more sophisticated processes in code.
To see the code check the given attachment ↓↓↓
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brenda invests $9,000.00 into an account that pays 3.75% interest compounded annually. use A=P(1+r)^2 to determine how much money she will have in 5 years
Answers
Answer:
Explanation:
A = P(1+r)^n
Where:
P = $9,000.00
n = 5 years
r = 3.75%
Putting value in the formula:
A = $9,000(1+3.75%)^5
A = $ 10,819
Brenda invests $9,000.00 into an account which pays 3.75% interest compounded annually. $10,819 money she will have in 5 years.
Compound interest:
Compound interest is the adding of interest to the principal sum of a loan or deposit, or interest on interest plus interest. It is the result of reinvesting interest, as well as adding it to the lent capital, rather than paying it out or seeking payment from the borrower, so that interest is received in the next month on the principal sum plus previously accumulated interest.
A = P(1+r)^n
Where:
P = $9,000.00
n = 5 years
r = 3.75%
Putting value in the formula:
A = $9,000(1+3.75%)⁵
A = $10,819
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Explain (or list) at least five reasons why you will benefit from going to college or trade school.
Answers
Answer:
1. Improved job prospects:
By completing a degree or trade program, you can have access to more job opportunities and higher-paying jobs.
2. Enhanced skills and knowledge: College and trade school education can equip you with the skills and knowledge needed to excel in your chosen field.
3. Networking opportunities: Attending college or trade school can help you build professional networks that can be useful for career advancement.
4. Personal growth: College or trade school can help you develop independence, critical thinking, and other essential skills that can benefit you throughout your life.
5. Greater earning potential: Completing a college degree or trade program can lead to higher earnings and a better quality of life in the long run.
Chose the best response for each question
Cómo se llama tu amigo?
Answers
A. Se llama Miguel.
Explanation:
When answering a question, the answer will almost always match the question in the tense being used. Therefore the answer must be "Se llama Miguel". Everything translates to "What's your friend's name?" "His name is Miguel".
Explain key aims of education and training in own specialist area
Answers
Answer:
Training and education in specialist area are used to improve the practices that are used in the educational organization to offer better opportunities to the students in the learning program.
what system strives to improve access to preventitave health care services
Answers
Answer:
sᴀɢᴜᴛᴀɴ ᴍᴏ ɴɢ ɪʏᴏ ᴡᴀɢ ᴋᴀɴɢ ᴛᴀᴍᴀᴅ ᴛᴀɴɢ ɪɴᴀ ᴍᴏ
Answer:
Managed care systems