A recent survey of 8 social networking sites has a mean of 13.1 million visitors for a specific monthwith the standard deviation was 4.1 million.PromptsSubmitted AnswersFind the value of ta/2, with 95% confidenceChoose a matchlevel.Find the 95% confidence interval of the true9.70

Answered: Image /qna-images/answer/e165f751-eb93-4cb7-8391-6a14d9e983f8.jpg

Answered: A recent survey of 8 social networking…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A data set includes 103 body temperature of healthy adult humans having a mean of 98.1F and standard deviation of 0.56 F . Construct a 99% confidence interval estimate of the mean body temperature of all healthy humans. What does the same suggest about the use of 98.6F as mean body temperature?
A researcher wants to estimate the mean blood cholesterol level of young men ages 15-25 with a 94.35% confidence interval. The blood cholesterol level of young men follows a Normal distribution with standard deviation σσ = 50 mg/dl. How large a sample would the researcher need to take to estimate the mean blood cholesterol to within 15 mg/dl?
Sixteen randomly selected business establishments were found to have a mean water consumption of 800 cubic meters a week, with a standard deviation of 175 cubic meters. Construct a 90% confidence interval to estimate the mean weekly water consumption of business establishments. Do not round off. Thanks.
An SRS of 27 students at NYU gave an average height of 5.4 feet and a standard deviation of .1 feet. Find a 90% confidence interval for the mean height of students at NYU.
A survey taken several years ago found that the average time a person reading a newspaper was 10.8mins. The standard deviation was 3mins. To see whether the average time changed since the newspapers format was revised, the editor survered 36 individuals. The average time the 36 people spent reading the paper was 12.2mins. At $=0.02, is there a change in the average time an individual spends reading the paper ? Find the 98% confidence interval of the mean.
A sample of 52 American adults found they generated a mean of 4.3 pounds of waste per day with a standard deviation of 1.2 pounds. Make a 98% confidence interval for mean daily waste generated by all American adults. Interpret the intErval
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A sample of 106 body temperatures was taken and the mean was 98.2 degrees F. The population standard deviation is 0.62 degrees. Use a 0.05 level of significance to test the claim that the average body temperature is actually different than 98.6 degrees F. Find the 95% confidence interval of the mean temperature and compare your results.
A data set includes 106 body temperatures of healthy adult humans having a mean of 98.7°F and a standard deviation of 0.66°F. Construct a 99% confidence interval estimate of the mean body temperature of all healthy humans. What does the sample suggest about the use of 98.6°F as the mean body temperature?
The average entrance exam score of a random sample of 35 freshmen students is 89.66 with a standard deviation of 18.28. Construct a 96% confidence interval for the true mean score of the freshmen students.
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A recent survey of 8 social networking sites has a mean of 13.1 million visitors for a specific month with the standard deviation was 4.1 million. Prompts Submitted Answers Find the value of ta/2, with 95% confidence Choose a match level. Find the 95% confidence interval of the true 9.70