Homework

Related Homework Questions
The lifetime of a certain brand of battery is known to have
The lifetime of a certain brand of battery is known to have a standard deviation of 16 hours. Suppose that a random sample of 70 such batteries has a mean lifetime of 39.7 hours. Based on this sample,… read more
R.R. Jha
Bachelor's Degree
6,465 satisfied customers
The lifetime of a certain brand of battery is known to have
The lifetime of a certain brand of battery is known to have a standard deviation of 9 hours. Suppose that a random sample of 150 such batteries has a mean lifetime of 37.3 hours. Based on this sample,… read more
Kofi
Professor
Ph.D.
4,196 satisfied customers
In a simple random sample of 100electronic components
In a simple random sample of 100electronic components produced by a certain method, the mean lifetime was 125hours. Assume that component lifetimes are normally distributed with population standard de… read more
Kofi
Professor
Ph.D.
4,196 satisfied customers
A sample of size =n82is drawn from a normal population whose
A sample of size =n82is drawn from a normal population whose standard deviation is =σ 6.3 The sample mean is =36.98a) construct a 95% interval for μ a 95% confidence interval for the mean is ___ < … read more
Kofi
Professor
Ph.D.
4,196 satisfied customers
Use the confidence interval to find the estimated margin of
Use the confidence interval to find the estimated margin of error. Then find the sample mean. A store manager reports a confidence interval of left parenthesis 46.6 comma 81.6 right parenthesis when e… read more
Kofi
Professor
Ph.D.
4,196 satisfied customers
In a certain machine the length of the parts is normally
in a certain machine the length of the parts is normally distribute and the standard deviation is 0.5mm. an adjustment is made and a random sample is taken to determine the mean length of parts now be… read more
Kofi
Professor
Ph.D.
4,196 satisfied customers
According to the historical data, the life expectancy in the
According to the historical data, the life expectancy in the United States is less than the life expectancy in Denmark. A new study has been made to see whether this has changed. Records of 215 indivi… read more
R.R. Jha
Bachelor's Degree
6,465 satisfied customers
The FBI wants to determine the effectiveness of their 10
The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to find out the fraction of people who appear on the list that are actually caught.Step 2 of 2 : Suppose … read more
Sandhya
Master's Degree
4,620 satisfied customers
Question #1 A statics professor plans class so carefully
quot;For Sandhya" Question #1 A statics professor plans class so carefully that the lengths of her classes are uniformly distributed between 47.0 and 57.0 minutes. Find the probability that a given cl… read more
Sandhya
Master's Degree
4,620 satisfied customers
1. For a continuous random variable x, the population mean
1. For a continuous random variable x, the population mean and standard deviation are 120 and 15 respectively. Find the mean and standard deviation of the sampling distribution of the sample mean for … read more
Sandhya
Master's Degree
4,620 satisfied customers
Random variable is normally distributed with a mean
Random variable is normally distributed with a mean of μ = 50 and a standard deviation of σ = 5. What is the probability the random variable will assume a value between 45 and 55 (to 4 decimals)? What… read more
R.R. Jha
Bachelor's Degree
6,465 satisfied customers
A manufacturer claims that the mean lifetime, , of its light
A manufacturer claims that the mean lifetime, µ, of its light bulbs is 42 months. The standard deviation of these lifetimes is 9 months. Forty bulbs are selected at random, and their mean lifetime is … read more
Sandhya
Master's Degree
4,620 satisfied customers
A company manufactures batteries for watches. A random sample
A company manufactures batteries for watches. A random sample of 169 batteries is taken and the sample mean life is 5.5 years with a standard deviation of 0.6 years. If you were constructing a 99% two… read more
Ray Atkinson
Bachelor's Degree
1,687 satisfied customers
Muvee, I posted this question for you, can you help me. Another
Muvee, I posted this question for you, can you help me. Another tutor tried to help me but the results are incorrect and is offline. Suppose that a random sample of thirteen recently sold houses in a … read more
Manas11
426 satisfied customers
9 STATISTICS QUESTIONS No need to show working. ANSWERS ...
9 STATISTICS QUESTIONS: No need to show working. ANSWERS ONLY. I will post the questions one by one. i only need answers. 1. Find the critical value, za/2, that corresponds to a confidence level of 85… read more
abozer
Bachelor's Degree
6,158 satisfied customers
1. For a specific confidence interval, the larger the ...
1. For a specific confidence interval, the larger the sample size, the smaller the maximum error of estimate will be. _____ T/F 2. An estimator is consistent if, as the sample size decreases, the valu… read more
abozer
Bachelor's Degree
6,158 satisfied customers
1. what information is necessary to calculate a confidence
1. what information is necessary to calculate a confidence interval? is the size of the population relevant when one is terermining the sample size for a confidence interva,? what is necessary to dete… read more
abozer
Bachelor's Degree
6,158 satisfied customers
Researchers estimate that U.S. college students spend an ...
Researchers estimate that U.S. college students spend an average of 7.2 hours per week on the Internet. Assuming a simple random sample of 500 college students and a sample standard deviation of 1.4 h… read more
Sk1llz
Math student
1,518 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

## What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

## Meet the Experts:

LogicPro

Engineer

8,488 satisfied customers

Expert in Java C++ C C# VB Javascript Design SQL HTML

Manal Elkhoshkhany

Tutor

4,602 satisfied customers

More than 5000 online tutoring sessions.

Linda_us

Finance, Accounts & Homework Tutor

3,138 satisfied customers

Post Graduate Diploma in Management (MBA)

Chris M.

M.S.W. Social Work

2,734 satisfied customers

Master's Degree, strong math and writing skills, experience in one-on-one tutoring (college English)

F. Naz

Chartered Accountant

2,238 satisfied customers

Experience with chartered accountancy

Bizhelp

CPA

1,887 satisfied customers

Bachelors Degree and CPA with Accounting work experience

Seanna

Tutor

1,781 satisfied customers

3,000+ satisfied customers, all topics, A+ work

< Previous | Next >

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less