Calculus and Above

Calculus Questions? Ask a Mathematician for Answers ASAP

Connect one-on-one with {0} who will answer your question

Customer Question

Find the margin of error...

Find the margin of error for the given values of c, s, and n.

C=0.95, s=2.3, n=49

E=_________

(Round to three decimal places as needed)

Construct the confidence interval for the population mean µ.

C= 0.98, x=7.7, s=0.9, and n=60

A 98% confidence interval for µ is _____, ______ (Round to two decimal places as needed.)

Construct the confidence interval for the population mean µ.

C= 0.95, x=16.9, s=10.0, and n=80

A 95% confidence interval for µ is _____, ______ (Round to two decimal places as needed.)

Use the confidence interval to find the estimated margin of error. Then find the sample mean.

A biologist reports a confidence interval of (3.2,4.4) when estimating the mean height in (in centimeters) of a sample of seedlings. The estimated margin of error is__________

Find the minimum sample size n needed to estimate µ for the given values of c, s, and E.

C=0.95, s=6.7, and E=1

Assume that a preliminary sample has at least 30 members.

N=__________ (Round up to the nearest whole number)

You are given the sample mean and the sample standard deviation. Use this information to construct the 90% and 95% confidence intervals or the population mean. Interpret the results and compare the widths of the confidence intervals. If convenient, use technology to construct the confidence intervals.

A random sample of 40 home theater systems has a mean price of $150.00 and a standard deviation of $17.90.

Construct a 90% confidence interval for the population mean.

The 90% confidence interval is (____,____).

(Round to two decimal places as needed.)

You are given the sample mean and the sample standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Which interval is wider? If the convenient, use technology to construct the confidence intervals.

A random sample of 43 gas grills has a mean price of $633.90 and a standard deviation of $56.90.

The 90% confidence interval is ( _____,_____). (Round to two decimal places as needed.)

You are given the sample mean and the sample standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Which interval is wider? If the convenient, use technology to construct the confidence intervals.

A random sample of 43 eight-ounce servings of different juice drinks has a mean of 79.6 calories and a standard deviation of 43.9 calories.

The 90% confidence interval is ( _____,_____). (Round to one decimal places as needed.)

People were polled on how many book they read the previous year. How many subjects are needed to estimate the number of books read the previous year within one book with 95% confidence? Initial survey results indicate that σ=11.2 books.

A 95% confidence level requires ______ subjects.

(Round up to the nearest whole number as needed.)

A doctor wants to estimate the HDL cholesterol of all 20-to 29- year old females. How many subjects are needed to estimate the HDL cholesterol within 2 points with 99% confidence assuming σ = 12.8? Suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size required?

A 99% confidence level requires ____ subjects.

(Round up to the nearest whole number as needed.)

Construct the indicated confidence interval for the population mean µ using (a) a t-distribution. (b) If you had incorrectly used a normal distribution, which interval would be wider?

C= 0.95, x=13.2, s=4.0, n=5

The 95% confidence interval using a t-distribution is (____,_____).

(Round to one decimal place as needed.)

In the situation, assume the random variable is normally distributed and use a normal distribution or a t-distribution to construct a 90% confidence interval for the population mean. If convenient, use technology to construct the confidence interval.

In a random sample of 10 adults from a nearby county, the mean waste generated

Per person per day was 4.17 pounds and the standard deviation was 1.87 pounds.

Repeat part (a), assuming the same statistics came from a sample size of 450. Compare the results.

For the sample of 10 adults, the 90% confidence intervals is (____,____).

(Round to two decimal places as needed.)

Use the given confidence interval to find the margin of error and the sample proportion. (0.669,0.697)

E=_____ (Type an integer or a decimal)

P=_____(Type an integer or a decimal)

C=0.95, s=2.3, n=49

E=_________

(Round to three decimal places as needed)

Construct the confidence interval for the population mean µ.

C= 0.98, x=7.7, s=0.9, and n=60

A 98% confidence interval for µ is _____, ______ (Round to two decimal places as needed.)

Construct the confidence interval for the population mean µ.

C= 0.95, x=16.9, s=10.0, and n=80

A 95% confidence interval for µ is _____, ______ (Round to two decimal places as needed.)

Use the confidence interval to find the estimated margin of error. Then find the sample mean.

A biologist reports a confidence interval of (3.2,4.4) when estimating the mean height in (in centimeters) of a sample of seedlings. The estimated margin of error is__________

Find the minimum sample size n needed to estimate µ for the given values of c, s, and E.

C=0.95, s=6.7, and E=1

Assume that a preliminary sample has at least 30 members.

N=__________ (Round up to the nearest whole number)

You are given the sample mean and the sample standard deviation. Use this information to construct the 90% and 95% confidence intervals or the population mean. Interpret the results and compare the widths of the confidence intervals. If convenient, use technology to construct the confidence intervals.

A random sample of 40 home theater systems has a mean price of $150.00 and a standard deviation of $17.90.

Construct a 90% confidence interval for the population mean.

The 90% confidence interval is (____,____).

(Round to two decimal places as needed.)

You are given the sample mean and the sample standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Which interval is wider? If the convenient, use technology to construct the confidence intervals.

A random sample of 43 gas grills has a mean price of $633.90 and a standard deviation of $56.90.

The 90% confidence interval is ( _____,_____). (Round to two decimal places as needed.)

You are given the sample mean and the sample standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Which interval is wider? If the convenient, use technology to construct the confidence intervals.

A random sample of 43 eight-ounce servings of different juice drinks has a mean of 79.6 calories and a standard deviation of 43.9 calories.

The 90% confidence interval is ( _____,_____). (Round to one decimal places as needed.)

People were polled on how many book they read the previous year. How many subjects are needed to estimate the number of books read the previous year within one book with 95% confidence? Initial survey results indicate that σ=11.2 books.

A 95% confidence level requires ______ subjects.

(Round up to the nearest whole number as needed.)

A doctor wants to estimate the HDL cholesterol of all 20-to 29- year old females. How many subjects are needed to estimate the HDL cholesterol within 2 points with 99% confidence assuming σ = 12.8? Suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size required?

A 99% confidence level requires ____ subjects.

(Round up to the nearest whole number as needed.)

Construct the indicated confidence interval for the population mean µ using (a) a t-distribution. (b) If you had incorrectly used a normal distribution, which interval would be wider?

C= 0.95, x=13.2, s=4.0, n=5

The 95% confidence interval using a t-distribution is (____,_____).

(Round to one decimal place as needed.)

In the situation, assume the random variable is normally distributed and use a normal distribution or a t-distribution to construct a 90% confidence interval for the population mean. If convenient, use technology to construct the confidence interval.

In a random sample of 10 adults from a nearby county, the mean waste generated

Per person per day was 4.17 pounds and the standard deviation was 1.87 pounds.

Repeat part (a), assuming the same statistics came from a sample size of 450. Compare the results.

For the sample of 10 adults, the 90% confidence intervals is (____,____).

(Round to two decimal places as needed.)

Use the given confidence interval to find the margin of error and the sample proportion. (0.669,0.697)

E=_____ (Type an integer or a decimal)

P=_____(Type an integer or a decimal)

Show More

Show Less

Was this answer helpful?

Describe your issueThe assistant will guide you

Chat 1:1 with a tutorLicensed Experts are available 24/7

100% satisfaction guaranteeGet all the answers you need

Related Calculus and Above Questions

Construct a 99% confidence interval to estimate the

Construct a 99% confidence interval to estimate the population mean using the data below. x=23 s=4.5 n=20 N=180 The 99% confidence interval for the population mean is ,. (Round to two decimal place… read more

The following data show the costs charged by a tax

The following data show the costs charged by a tax preparation service for a random sample of 15 tax returns. Complete parts a through c. $130 $105 $135 $200 $95 $115 $90 $200 $135 $80 $155… read more

You are given the sample mean and the population standard

You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare… read more

You are given the sample mean and the population standard

You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare… read more

You are given the sample mean and the population standard

You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare… read more

A doctor wants to estimate the HDL cholesterol of all 20-

A doctor wants to estimate the HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the HDL cholesterol within 3 points with 99 % confidence assuming sigma equ… read more

Chapter 6 00. The average rent in a city is $1,570 per month

Chapter 6 00. The average rent in a city is $1,570 per month with a standard deviation of $200. Assume rent follows the normal distribution. Use the empirical rule to answer the following questions. a… read more

1. A random sample of 92 observers produced a mean X = 25.8

1. A random sample of 92 observers produced a mean X = 25.8 and a standard deviation s = 2.6. a) Find a 95% confidence interval for 11. b) Find the 90% confidence interval for Jl c) Find the 99% confi… read more

1. In a week before and the week after a holiday, there were

1. In a week before and the week after a holiday, there were 10,000 total deaths, and 4952 of them occurred in the week before the holiday. a. Construct a 95% confidence interval estimate of the propo… read more

a random sample of four microwave ovens, the mean cost was

a random sample of four microwave ovens, the mean cost was &85.00 and the standard deviation was $13.50. The 90% confidence interval for the population mean u is (_,_) (round to two decimal places as … read more

Please help with these 17 questions!! 1. Find the margin of

Please help with these 17 questions!! 1. Find the margin of error for the given values of c,s,and n. c=0.90,s=2.9,n=100 2. Construct the confidence interval for the population mean u. c=0.98,x=8.4,s=0… read more

1) Question 1 (Q3)- a random sample of n=100 observations is

1) Question 1 (Q3)- a random sample of n=100 observations is selected from a population with µ=30 and o=23. Approximate the probabilities shown below. a. P(x̄ ≥28 b. P(22.1≤ x̄ ≤ 26.8) c. P(x̄≤ 28.2) … read more

Calculate the standard error. (Round your answers to 4 decimal

Calculate the standard error. (Round your answers to 4 decimal places.) Standard Error (b) n = 50, π = .20 (c) n = 100, π = .10 (d) n = 500, π = .005 Find a confidence interval for μ assuming that eac… read more

Find the margin of error for the given values of c, s, and

Find the margin of error for the given values of c, s, and n. C=0.90, s=3.9, n=49 E=_________ (Round to three decimal places as needed) Construct the confidence interval for the population mean µ. C= … read more

16. In a survey of 630 males ages 18-64, 391 say they have

16. In a survey of 630 males ages 18-64, 391 say they have gone to the dentist in the past year. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and com… read more

1.Assume that the weight loss for the first month of a diet

1.Assume that the weight loss for the first month of a diet program varies between 6 pounds and 12 pounds, and is spread evenly over the range of possibilities, so that there is a uniform distribution… read more

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.

JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.

Web sites like justanswer.com/legal

...leave nothing to chance.

...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.

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

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!!!!

Los 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.

Hesperia, CA

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

Kernersville, 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.

Woodstock, 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.

Elkton, 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.

Dallas, TX

< Previous | Next >

Mr. Gregory White

Master's Degree

114 satisfied customers

M.A., M.S. Education / Educational Administration

SusanAthena

Master's Degree

102 satisfied customers

Tutor for Algebra, Geometry, Statistics. Explaining math in plain English.

Dr Arthur Rubin

Doctoral Degree

97 satisfied customers

Ph.D. in Mathematics, 1978, from the California Institute of Technology, over 20 published papers

JACUSTOMER-yrynbdjl-

Master's Degree

42 satisfied customers

I have a MS in Mathematics and I have taught Mathematics for 10 years at the college level.

Don

Master's Degree

29 satisfied customers

M.S. Astronautical Engineering. Math/Sci/Comp Tutor

Kofi

PhD in Statistics

8,735 satisfied customers

Masters in Mathematics and Statistics

Sandhya_sharma

Master's Degree

5,692 satisfied customers

I hold M.Sc and M.Phil degrees in math and have several years of teaching experience.

< 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.