a random sample of six people, the mean driving distance to work was 25.3 miles and the standard deviation was 7.5 miles. Assuming the population is normallystributed and using the t-distribution, a 95% confidence interval for the population mean p is (17 4, 33.2) (and the margin of error is 7.9) Through research, it haseen found that the population standard deviation of driving distances to work is 6 2 Using the standard normal distribution with the appropriate calculations for aandard deviation that is known, find the margin of error and construct a 95% confidence interval for the population mean u Interpret and compare the results.dentify the margin of errorRound to one decimal place as needed)

Answered: Image /qna-images/answer/382a0ad2-38bd-44ba-bf96-e4fa3c8f51c5.jpg

Answered: andom sample of six people, the mean…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

An SRS of 23 students at TSU gave an average height of 5.6 feet and a standard deviation of .1 feet. Construct a 90% confidence interval for the mean height of students at TSU.
Blood sugars from eight patients in a rural clinic were recorded last summer by the local physician. The blood sugars results were: 120, 145, 200, 250, 79, 100, 894, 255 mg/d1. The standard deviation was 5. Calculate the 95% Confidence Interval (CI) of the mean blood sugars.
In a study of 110 women and 116 men, it was found that mean body temperature for women was 97.690 F and mean body temperature for men was 97.450 F. Assume that the populations are independent, and the standard deviations were found to to be 0.89o F for women, and 0.660 F for men. Use an α = 0.05 significance level to test the claim that woman and men have different mean body temperatures. For full credit your hypothesis test must include: the claim, the null and alternate hypothesis, your test statistic and corresponding p-value, your decision, and the interpretation of your decision as it relates to the claim. It is acceptable to use technology to calculate the test statistic and the p-value here.
Suppose the population standard deviation is standard deviation "sigma"=7, an SRS of n=45 is obtained, and the confidence level is chosen to be 95%. What is the margin of error for estimating a mean "mu" ?
A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past studies of this tire, the standard deviation is known to be 8,000. A survey of owners of that tire design is conducted. Of the 30 tires surveyed, the mean lifespan was 45,900 miles with a standard deviation of 9,800 miles. Using alpha = 0.05, is the data highly consistent with the claim? A-State the distribution to use for the test. (Round your answers to two decimal places.) B-What is the test statistic? (If using the z distribution round your answers to two decimal places, and if using the t distribution round your answers to three decimal places.) C-What is the p-value? (Round your answer to four decimal places.) D-Indicate the correct decision ("reject" or "do not reject" the null hypothesis), the reason for it, and write an appropriate conclusion. (i) Alpha (Enter an exact number as an integer, fraction, or decimal.) E-
An experimental determination of Pb in a bullet using ICP-OES was repeated 3 times. The mean and standard deviations were 0.034% and 0.003% repectively. What is the 95%confidence interval of the mean?
A group of adult males has foot lengths with a mean of 26.79 cm and a standard deviation of 1.27 cm. Use the range rule of thumb for identifying significant identify the limits separating values that are significantly low or significantly highIs the adult male foot length of 29.7 cm significantly low or significantly highExplain A random sample of 10 subjects have weights with a standard deviation of 14.0120 kgWhat is the variance of their weights? Be sure to include the appropriate u with the result The variance of the sample data is
A random sample of 78 measurements was selected from a population with ?=2.76σ=2.76. The sample mean was 122.5. Calculate a 99% confidence interval for ?
A study was carried out on the effectiveness of Reiki therapeutic touch to manage pain in cancer patients. Pain was assessed twice for each of the 14 cancer patients: once before and once after Reiki touch therapy. For each of the 14 subjects, the difference between each pair of pain scores was recorded (difference = after - before). The 14 differences have a mean of -1.86 and a standard deviation of 1.69. 1. Compute a 95% confidence interval for the true population mean change in pain scores. (give answers to 4 places past decimal) lower bound: Submit Answer Tries 0/99 upper bound: 2. Which one of the following is the correct interpretation of the confidence interval in part 1 above? O The most likely mean difference in pain score for any cancer patient is -1.86. O There is a 95% chance that the above confidence interval will contain the true mean difference. O The true mean difference in pain score in all cancer patients is -1.86. O With repeated sampling, your confidence interval…
The ages of registered voters in Smith County are normally distributed with a population standard deviation of 3 years and an unknown population mean. A random sample of 18 voters is taken and results in a sample mean of 55 years. Find the margin of error for a 95% confidence interval for the population mean. z0.10z0.10 z0.05z0.05 z0.025z0.025 z0.01z0.01 z0.005z0.005 1.282 1.645 1.960 2.326 2.576 You may use a calculator or the common z values above. Round the final answer to two decimal places.
Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 4 inches. The heights of 6 randomly selected students are 69, 62, 68, 64, 61 and 68. x¯ = Margin of error at 99% confidence level = 99% confidence interval = [ , ]
Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 3 inches. The heights of 7 randomly selected students are 72, 61, 74, 68, 64, 66 and 64. x¯ = Margin of error at 95% confidence level = 95% confidence interval = [ , ]

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS