Calculus and Above

Calculus Questions? Ask a Mathematician for Answers ASAP

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

we need to construct a...

1. In order to identify baby growth patterns that are unusual, we need to construct a confidence interval estimate of the mean head circumference of all babies that are 2 months old. A random sample of 100 babies is obtained and the mean head circumference is found to 40.6cm. Assuming that the population standard deviation is known to be 1.6 cm., Find a 95% confidence interval estimate for the mean head circumference of all two-moth old babies. What aspect of this problem is not realistic?

2. A study was conducted to estimate hospital costs for accident victims who wore seat belts. Twenty randomly selected cases have a distribution which appears to be symmetric and bell-shaped with a mean of $9004 and a standard deviation and a standard deviation of $5629. based on data from the U. S. Department of Transportation. Construct a 99% confidence interval for the mean of all such costs.

For the following problems:

1. State the Null Hypothesis and the Alternative Hypothesis

2. Determine the test statistic.

3. Determine the P-value

4. Make a decision regarding the hypotheses based on the P-value and the Level of

Significance.

3. A survey taken showed that among 785 randomly selected subjects who completed 4 years of

college, 144 smoke and 641 do not smoke (based on data from the American Medical

Association). Use the 0.01 level of significance to test the claim that the rate (proportion) of

smoking among those with four years of college is less than 27 out of 100 rate of the general

public. Why do you think that the rate of college graduates who smoke would be less than the

rate of the general public?

4. The health of the bear population in Yellowstone National Park is monitored by periodic measurements taken from anesthetized bears. A sample of 54 bears has a mean weight of 182.9lbs. Assuming that the population standard deviation is known to be 121.8lbs, use a 0.05 level of significance to test the claim the population mean of all such bear weights is less than 200lbs.

5. The birth weights (in kilograms) are recorded for a sample of male babies born to mothers taking a special vitamin supplement (based on data from the New York Department of Health). When testing the claim that the mean birth weight for all male babies of mothers given vitamins is equal to 3.39kg, which is the mean weight of the population of all male babies, a sample of 16 babies had a mean of 3.675kg and a standard deviation of 0.657. Based on these results, does the vitamin supplement appear to have any effect on the mean birth weight?

Use the 0.01 level of significance.

2. A study was conducted to estimate hospital costs for accident victims who wore seat belts. Twenty randomly selected cases have a distribution which appears to be symmetric and bell-shaped with a mean of $9004 and a standard deviation and a standard deviation of $5629. based on data from the U. S. Department of Transportation. Construct a 99% confidence interval for the mean of all such costs.

For the following problems:

1. State the Null Hypothesis and the Alternative Hypothesis

2. Determine the test statistic.

3. Determine the P-value

4. Make a decision regarding the hypotheses based on the P-value and the Level of

Significance.

3. A survey taken showed that among 785 randomly selected subjects who completed 4 years of

college, 144 smoke and 641 do not smoke (based on data from the American Medical

Association). Use the 0.01 level of significance to test the claim that the rate (proportion) of

smoking among those with four years of college is less than 27 out of 100 rate of the general

public. Why do you think that the rate of college graduates who smoke would be less than the

rate of the general public?

4. The health of the bear population in Yellowstone National Park is monitored by periodic measurements taken from anesthetized bears. A sample of 54 bears has a mean weight of 182.9lbs. Assuming that the population standard deviation is known to be 121.8lbs, use a 0.05 level of significance to test the claim the population mean of all such bear weights is less than 200lbs.

5. The birth weights (in kilograms) are recorded for a sample of male babies born to mothers taking a special vitamin supplement (based on data from the New York Department of Health). When testing the claim that the mean birth weight for all male babies of mothers given vitamins is equal to 3.39kg, which is the mean weight of the population of all male babies, a sample of 16 babies had a mean of 3.675kg and a standard deviation of 0.657. Based on these results, does the vitamin supplement appear to have any effect on the mean birth weight?

Use the 0.01 level of significance.

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

A New York charity recently did a fund raising campaign to

A New York charity recently did a fund raising campaign to support libraries. The following table gives the number of people who gave money at each fundraising level based on what region of the state … read more

Given below are the birth weights of babies born to mothers

Given below are the birth weights of babies born to mothers who took special vitamin supplements while pregnant: 3.43 4.57 3.93 4.33 3.39 3.68 4.68 3.52 3.84 3.12 4.29 2.27 4.13 4.47 3.22 3.43 2.64 3.… read more

ARE THERE CHARGES IN VOLVED, According to a research,

According to a research, 52.052.0% of households nationwide used natural gas for heating during a year. Recently, a survey of 2 comma 3002,300 randomly selected households showed that 53.053.0% used natural gas. Use a 0.05 significance level to test the claim that the 52.052.0% national rate has changed. Formulate the null and alternative hypotheses. Choose the correct answer below. A. Upper H 0H0: pnot equals≠0.520.52, Upper H Subscript aHa: pequals=0.520.52 B. Upper H 0H0: pgreater than>0.520.52, Upper H Subscript aHa: pless than<0.520.52 C. Upper H 0H0: pequals=0.520.52, Upper H Subscript aHa: pgreater than>0.520.52 D. Upper H 0H0: pequals=0.520.52, Upper H Subscript aHa: pnot equals≠0.520.52 Find the test statistic. zequals= nothing (Round to one decimal place as needed.) Find the P-value for the found test statistic. P-valueequals= nothing (Round to four decimal places as needed.) Now make a conclusion. Choose the correct answer below. A. There is not enough information to make a conclusion. B. There is not sufficient evidence to support the claim that the percentage of households using natural gas has changed. C. There is sufficient evidence to support the claim that the percentage of households using natural gas has changed … read more

Well its on statistics, the birth weights (in kiograms) are

the birth weights (in kiograms) are recorded fro a sample of male babies born to mothers taking special vitamin supplement … read more

What are hypotheses for the engineer in charge of water rationing?

1) An engineer in charge of water rationing for the U.S. Army wants to determine if the average male soldier spends less time in the shower than the average female soldier. Let μm represent the averag… read more

1. (Chapter 7: Estimating a Population Proportion) A poll

Attachment: 2014-06-28_022745_work.docx 1. (Chapter 7: Estimating a Population Proportion) A poll sample of 500 people was conducted if they support new initiative. 200 people said yes. Find the margi… read more

MULTIPLE CHOICE. MUST SHOW WORK FOR ENTIRE QUIZ. 1. (5 points)

MULTIPLE CHOICE. MUST SHOW WORK FOR ENTIRE QUIZ. 1. (5 points) Of 84 adults selected randomly from one town, 62 have health insurance. Find a 90% confidence interval for the true proportion of all adu… read more

MULTIPLE CHOICE. Choose the one alternative that best completes

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1. (5 points) Of 84 adults selected randomly from one town, 62 have health insurance. Find a 90% … 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

I Calculated The Sample Mean For 12 Randomly Selected High

I calculated the sample mean for 12 randomly selected high school seniors' test scores. The mean was 908.3 and the sample standard deviation was 305.4. Can you construct a 99% confidence interval for … read more

Please help me with this test! I have no idea! :( 5.The

Please help me with this test! I have no idea! :( 5.The test statistic in a two tailed test is z=-1.63. Find the P-value. 6. Assume that a hypothesis test of the given claim will be conducted. Identif… read more

1. The National Student Loan Survey collects data to examine

1. The National Student Loan Survey collects data to examine questions related to the amount of money that borrowers owe. The survey selected a sample of 1280 borrowers who began repayment on their lo… read more

Must Show work need it now 7 questions 1. Identify H0 and

Must Show work need it now 7 questions 1. Identify H0 and H1 the proportion of people aged 18-25 who currently use illicit drugs is equal to 20% 2. Finding Test statistic z, the claim is more than 75%… read more

Find 95% confidence interval estimate for the mean head

1. In order to identify baby growth patterns that are unusual, we need to construct a confidence interval estimate of the mean head circumference of all babies that are 2 months old. A random sample o… read more

Hi I need help with stats homework: 1. The authors of

Hi I need help with stats homework: 1. The author's of the article “Perceived risks of Heart Disease and Cancer Among Cigarette Smokers” expressed the concern that a majority of smokers do not view th… read more

Below are 8 questions that I need answers for. I do not need

Below are 8 questions that I need answers for. I do not need to see the work. I only need to have the correct answer. I have also provided the possible correct answers. 1. the mistake of rejecting the… read more

A random sample of the birth weights of 186 babies has mean

A random sample of the birth weights of 186 babies has mean of 3103 g and a dtandard deviation of 662 g. Construct a 99% confidence interval estimate of the mean birth weight for all such babies. What… read more

1. The 95% confidence interval states that 95% of the sample

1. The 95% confidence interval states that 95% of the sample means of a specified sample size selected from a population will lie within plus or minus 1.96 standard deviations of the hypothesized popu… 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 >

rajeevanpillai

Master's Degree

1,335 satisfied customers

B.Sc Mathematics and M.Sc, M Phil Statistics

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

96 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.

dhouse1940

Master's Degree

33 satisfied customers

BS mathematics, MS biostatistics, 35+ yrs designing & analyzing biological experiments.

Don

Master's Degree

29 satisfied customers

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

< 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.