Calculus and Above

Calculus Questions? Ask a Mathematician for Answers ASAP

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

Customer Question

Pls answer in 30...

Pls answer in 30 min for online quiz, good tip will be paid. No need for workings just answers. Thanks

.

(Points: 1)

Which of the following statements are correct?

1. A confidence level expresses the degree of certainty that an interval will include the actual value of the sample statistic.

2. A confidence level expresses the degree of certainty that an interval will include the actual value of the population parameter.

3. None of these statements is correct.

4. A confidence level expresses the degree of certainty that a point estimate will include the actual value of the sample statistic.

5. A confidence level expresses the degree of certainty that a point estimate will include the actual value of the population parameter.

2.

(Points: 1)

True or False

The appropriate procedure for constructing an interval estimate for the population mean depends largely on whether the population standard deviation is known.

1. True

2. False

3.

(Points: 1)

You are interested in determining the average cost of a 3-minute telephone call to locations within the continental U.S. What sample size must you take to be 96% confident that the results will be within $.75 of the true mean cost per call? From the phone company, you have gotten an estimate of = 7.71.

1. 406

2. 445

3. 22

4. 574

5. 185

4.

(Points: 1)

The Ford Motor Company is interested in consumer acceptance of its subcompact car based on the proportion of positive responses to a survey. How large a survey must the company take to have 95% confidence and no more than 0.01 error?

1. 9604

2. 9603

3. 4900

4. 19208

5. 49

5.

(Points: 1)

True or False

If a sample has 16 observations and a 95% confidence estimate for is needed, the appropriate t-score is 1.746.

1. True

2. False

6.

(Points: 1)

True or False

The Student’s t distribution has a mean of zero and the shape is determined by the number of degrees of freedom.

1. False

2. True

7.

(Points: 1)

After calculating the sample size needed to estimate a population proportion to within .04, your statistics professor told you the maximum allowable error must be reduced to just .01. If the original calculation led to a sample size of 800, the sample size will now have to be:

1. 6400.

2. 12,800.

3. 800.

4. 3200.

8.

(Points: 1)

A federal auditor for nationally chartered banks from a random sample of 100 accounts found that the average demand deposit balance at the First National Bank of small town was $549.82. If the auditor needed a point estimate for the population mean for all accounts at this bank, what would she use?

1. Not enough information is given to answer this question.

2. The average of $549.82 for this sample.

3. The average of $54.98 for this sample.

4. She would survey the total of all accounts and determine the mean.

5. There is no acceptable value available.

10.

(Points: 1)

True or False

If we want to cut the maximum likely error in half, we will have to double the sample size.

1. True

2. False

.

(Points: 1)

Which of the following statements are correct?

1. A confidence level expresses the degree of certainty that an interval will include the actual value of the sample statistic.

2. A confidence level expresses the degree of certainty that an interval will include the actual value of the population parameter.

3. None of these statements is correct.

4. A confidence level expresses the degree of certainty that a point estimate will include the actual value of the sample statistic.

5. A confidence level expresses the degree of certainty that a point estimate will include the actual value of the population parameter.

2.

(Points: 1)

True or False

The appropriate procedure for constructing an interval estimate for the population mean depends largely on whether the population standard deviation is known.

1. True

2. False

3.

(Points: 1)

You are interested in determining the average cost of a 3-minute telephone call to locations within the continental U.S. What sample size must you take to be 96% confident that the results will be within $.75 of the true mean cost per call? From the phone company, you have gotten an estimate of = 7.71.

1. 406

2. 445

3. 22

4. 574

5. 185

4.

(Points: 1)

The Ford Motor Company is interested in consumer acceptance of its subcompact car based on the proportion of positive responses to a survey. How large a survey must the company take to have 95% confidence and no more than 0.01 error?

1. 9604

2. 9603

3. 4900

4. 19208

5. 49

5.

(Points: 1)

True or False

If a sample has 16 observations and a 95% confidence estimate for is needed, the appropriate t-score is 1.746.

1. True

2. False

6.

(Points: 1)

True or False

The Student’s t distribution has a mean of zero and the shape is determined by the number of degrees of freedom.

1. False

2. True

7.

(Points: 1)

After calculating the sample size needed to estimate a population proportion to within .04, your statistics professor told you the maximum allowable error must be reduced to just .01. If the original calculation led to a sample size of 800, the sample size will now have to be:

1. 6400.

2. 12,800.

3. 800.

4. 3200.

8.

(Points: 1)

A federal auditor for nationally chartered banks from a random sample of 100 accounts found that the average demand deposit balance at the First National Bank of small town was $549.82. If the auditor needed a point estimate for the population mean for all accounts at this bank, what would she use?

1. Not enough information is given to answer this question.

2. The average of $549.82 for this sample.

3. The average of $54.98 for this sample.

4. She would survey the total of all accounts and determine the mean.

5. There is no acceptable value available.

10.

(Points: 1)

True or False

If we want to cut the maximum likely error in half, we will have to double the sample size.

1. True

2. False

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

1. What is the appropriate critical value of the following

1. What is the appropriate critical value for each of the following confidence levels and sample sizes? (Remember that in regard to confidence level this implies two-tails) (a) Critical z-value for an… read more

Need help with statistics multiple choice questions ASAP. An

Need help with statistics multiple choice questions ASAP. An investigator claims, with 95 percent confidence, that the interval between 10 and 16 miles includes the mean commute distance for all Calif… read more

I need help whit the following 10 questions. 1. The probability

I need help whit the following 10 questions. 1. The probability that the actual population mean will be outside of the 98% confidence interval is: 1 % 2 % 4 % 5 % 2. The Chi-square test is very sensit… read more

The questions that I need answer are already on the site just

The questions that I need answer are already on the site just need the answers for 1. The Chi-square test is very sensitive to small differences in frequency differences. (Points : 1) True False Quest… read more

1. Point estimates provide less confidence in indicating a

1. Point estimates provide less confidence in indicating a parameter's value than a confidence interval. True False 2. Confidence intervals provide an indication of how much variation exists in the da… read more

1. The Chi-square test is very sensitive to small differences

1. The Chi-square test is very sensitive to small differences in frequency differences. (Points : 1) True False Question 2. 2. The probability that the actual population mean will be outside of a 98% … read more

1. What is the primary reason for applying a finite population

1. What is the primary reason for applying a finite population correction coefficient? A. If you don't apply the correction coefficient, your confidence intervals will be too narrow, and thus overconf… read more

1. H0 is p = 0.45 and H1 is p ≠ 0.45. What type of test will

1. H0 is p = 0.45 and H1 is p ≠ 0.45. What type of test will be performed? A. One-tail testing of a mean B. Two-tail testing of a proportion C. One-tail testing of a proportion D. Two-tail testing of … read more

Hello, I have an 11 question quiz for PSYC 258: Behavioral

Hello, I have an 11 question quiz for PSYC 258: Behavioral SCIENCE STATISTICS that I need complete in under 40 minutes! Please complete! Question 1 An investigator claims, with 95 percent confidence, … read more

FOR GURU2009 ONLY: Assignment number 1: Needed right now! 1. In

FOR GURU2009 ONLY: Assignment number 1: Needed right now! 1. In the standard normal distribution, the standard deviation is always: 2. The area under the standard normal curve is: 3. If Mary gets a 90… read more

1. 36 randomly picked people were asked if they rented or owned

1. 36 randomly picked people were asked if they rented or owned their own home, 10 said they rented. What is the point estimate of the true proportion of home owners? (Points : 6) 0.722 0.217 0.278 0.… read more

Find the critical value x2r based on the given information

Find the critical value x2r based on the given information sample size 5 and confidence level 98%… read more

A study is to be conducted on the percentage of homeowners

A study is to be conducted on the percentage of homeowners who own at least three television sets. What minimum sample size is required if we wish to be 95% confident that the error in estimating this… read more

Question 1 For a cluster sample, the estimates of the halves

Question 1 For a cluster sample, the estimates of the halves came in at 58.75 and 58.35. Find the Standard Error. Answer a. 0.30 b. 110.6 c. 0.15 d. 0.20 e. 110.9 Question 3 A utility company serves 5… read more

If 600 different polling firms each construct a 99%

If 600 different polling firms each construct a 99% confidence interval (based on 600 different random samples) for the average age of male college students in the U.S. majoring in mathematics, how ma… read more

Sample of 45 home theatre systems has a mean price of $129.00

3. 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 conv… 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 >

rajeevanpillai

Master's Degree

1,256 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.