Question Help In order to estimate the mean amount of time computer users spend on the internet each month, how many computer users must be surveyed in order to be 95% confident that your sample mean is within 12 minutes of the population mean? Assume that the standard deviation of the population of monthly time spent on the internet is 210 min. What is a major obstacle to getting a good estimate of the population mean? Use technology to find the estimated minimum required sample size The minimum sample size required is (Round up to the nearest whole number ) computer users

Question Help In order to estimate the mean amount of time computer users spend on the internet each month, how many computer users must be surveyed in order to be 95% confident that your sample mean is within 12 minutes of the population mean? Assume that the standard deviation of the population of monthly time spent on the internet is 210 min. What is a major obstacle to getting a good estimate of the population mean? Use technology to find the estimated minimum required sample size The minimum sample size required is (Round up to the nearest whole number ) computer users

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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Hi I need help with the significant high please
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When working out the standard deviation, do you use the population equation or the sample equation? I.e do you divide by 10 or 9? Thanks
I need help with this one please thank you
SAT Writing scores are distributed in population with μ = 487 and o = 115. Describe the sampling distribution of sample mean (the shape, mean, and standard error) for n = 64. Normal; 487; 14.38 Normal; 487; 115 Normal; 487; 1.80 Uniform; 487; 115
Dataset Available: Download Houston.xlsx You may need to use the appropriate appendix table or technology to answer this question. Data were collected on the amount spent by 64 customers for lunch at a major Houston restaurant. These data are contained in the file Houston. Based upon past studies the population standard deviation is known with a = $6. 20.50 14.63 23.77 29.96 28.87 15.78 18.16. 12.16 18.89 19.88 23.11 20.11 20.34 27.49 36.55 21.18 19.22 34.13 25.53 27.71 33.81 21.79 29.49 32.70 9.20 20.89 11.22 16.43 17.66 9.59 Need Help? Read It 19.16 26.35 20.01 26.85 13.63 17.22 13.17 20.12 22.11 22.47 20.36 35.47 11.85 17.88 6.83 30.99 18.38 26.85 25.10 20.08 30.36 21.79 14.62 Watch It 18.37 32.27 12.63 27.55 25.87 14.37 15.61 26.46 24.24 16.66 20.85 (a) At 99% confidence, what is the margin of error in dollars? (Round your answer to the nearest cent.) $ (b) Develop a 99% confidence interval estimate of the mean amount spent for lunch in dollars. (Round your answers to the nearest…
z Scores LeBron James, one of the most successful basketball players of all time, has a height of 6 feet 8 inches, or 203 cm. Based on statistics from Data Set 1 “Body Data” in Appendix B, his height converts to the z score of 4.07. How many standard deviations is his height above the mean?
Can you show me the steps to complete a problem like this?
Question Help Assume that human body temperatures are normally distributed with a mean of 98.21°F and a standard deviation of 0.61°F. a. A hospital uses 100.6°F as the lowest temperature considered to be a fever. What percentage of normal and healthy persons would be considered to have a fever? Does this percentage suggest that a cutoff of 100.6°F is appropriate? b. Physicians want to select a minimum temperature for requiring further medical tests. What should that temperature be, if we want only 5.0% of healthy people to exceed it? (Such a result is a false positive, meaning that the test result is positive, but the subject is not really sick.) Click to view page 1 of the table. Click to view page 2 of the table
pls find the attached file.