Commute times to Central Bank for a random sample of employees (in minutes) are listed below....
Commute times to Central Bank for a random sample of employees (in minutes) are listed below.
21 32 13 19 48 22 7 18 31 56 28 6 16
Estimate with 95% confidence the mean commute time of Central Bank employees.
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Commute times to Central Bank for a random sample of employees
(in minutes) are listed below....
Use the following scenario to answer questions 27 and 28. The distribution of commute times for...
Use the following scenario to answer questions 27 and 28. The distribution of commute times for a random sample of 500 St. Louis workers is approximately symmetric and bell-shaped, with a mean of 27 minutes and standard deviation of 2.5 minutes. 27. What proportion of commute times are between 24.5 and 29.5 minutes? (a) 50% (b)68% (c) 95% (d) 99.7% 28. Commute times in Atlanta, also bell-shaped, have a mean of 45 minutes with a standard deviation 8 minutes. Which...
The travel times (in minutes) to work for a random sample of employees are shown in...
The travel times (in minutes) to work for a random sample of employees are shown in the frequency table below. What is the mean of the times? time (mins) frequency 0-10 25 11-21 17 22-32 12 33-43 8 44-54 7 55-65 2
In a random sample of 17 people, the mean commute time to work was 30.7 minutes and the standard deviation was 7.3 minutes
In a random sample of 17 people, the mean commute time to work was 30.7 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 95% confidence interval for the population mean μ. What is the margin of error of μ? Interpret the results. The confidence interval for the population mean μ is _______ . The margin of error of μ is _______ .Interpret the results A. With 96% confidence, it can...
In a random sample of 8 people, the mean commute time to work was 34.5 minutes...
In a random sample of 8 people, the mean commute time to work was 34.5 minutes and the standard deviation was 7.3 minutes. A 95% confidence interval using the t-distribution was calculated to be (28.4.40.6). After researching commute times to work, it was found that the population standard deviation is 9.4 minutes. Find the margin of error and construct a 95% confidence interval using the standard normal distribution with the appropriate calculations for a standard deviation that is known. Compare...
In a random sample of 21 people, the mean commute time to work was33.9 minutes and...
In a random sample of 21 people, the mean commute time to work was33.9 minutes and the standard deviation was7.3minutes. Assume the population is normally distributed and use a t-distribution to construct a 98%confidence interval for the population mean mμ. What is the margin of error of mμ? The confidence interval for the population mean mμ is -------------- The margin of error of mμ is ----------------- Interpret the results. A. With 98% confidence, it can be said that the commute...
In a random sample of 18 people, the mean commute time to work was 33.8 minutes...
In a random sample of 18 people, the mean commute time to work was 33.8 minutes and the standard deviation was 7.1 minutes. Assume the population is normally distributed and use a t-distribution to construct a 95% confidence interval for the population mean μ. What is the margin of error of μ? Interpret the results.
In a random sample of 18 people, the mean commute time to work was 31.5 minutes...
In a random sample of 18 people, the mean commute time to work was 31.5 minutes and the standard deviation was 7.2 minutes. Assume the population is normally distributed and use a t-distribution to construct a 95% confidence interval for the population mean muμ. What is the margin of error of muμ? Interpret the results.
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In a random sample of 25 people, the mean commute time to work was 32.9 minutes and the standard deviation was 7.1 minutes. Assume the population is normally distributed and use a t-distribution to construct a 98% confidence interval for the population mean μ: What is the margin of error of μ? Interpret the results. The confidence interval for the population mean μ is _______ The margin of error of μ is _______ Interpret the results A. If a large sample of people are...
The commute times for workers in a city are normally distributed with an unknown population mean...
The commute times for workers in a city are normally distributed with an unknown population mean and standard deviation. If a random sample of 37 workers is taken and results in a sample mean of 31 minutes and sample standard deviation of 5 minutes. Use Excel to find a 95% confidence interval estimate for the population mean using the Student's t-distribution. Round the final answers to two decimal places.
In a random sample of 25 people, the mean commute time to work was 30.2 minutes...
In a random sample of 25 people, the mean commute time to work was 30.2 minutes and the standard deviation was 7.2 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval for the population mean mu. What is the margin of error of mu? Interpret the results. The confidence interval for the population mean mu is left parenthesis nothing comma nothing right parenthesis . (Round to one decimal place as needed.) The...
Use the following scenario to answer questions 27 and 28. The distribution of commute times for a random sample of 500 St. Louis workers is approximately symmetric and bell-shaped, with a mean of 27 minutes and standard deviation of 2.5 minutes. 27. What proportion of commute times are between 24.5 and 29.5 minutes? (a) 50% (b)68% (c) 95% (d) 99.7% 28. Commute times in Atlanta, also bell-shaped, have a mean of 45 minutes with a standard deviation 8 minutes. Which...
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