A study of the career paths of hotel general managers sent questionnaires to an SRS of...
A study of the career paths of hotel general managers sent questionnaires to an SRS of 160 hotels belonging to major U.S. hotel chains . There were 81 responses. The average time these 81 general managers had spent with their current company was 11.78 years. (Take it as known that the standard deviation of time with the company for all general managers is 3.2 years)
a. Calculate a 99.5% confidence interval for the mean numbers of years that general managers of major-chain hotels have spent with their current company
b. Suppose that we do not know that 
= 3.2, but the standard deviation of the sample is calculated to be
3.6. Calculate a 99% confidence interval for the mean number of
years that managers have spent with their current company under the
new conditions.
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A study of the career paths of hotel general managers sent
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In a certain management study, 15 randomly selected managers were found to spend a mean of...
In a certain management study, 15 randomly selected managers
were
found to spend a mean of 2.40 hours each day on paperwork with a
standard deviation of 1.30 hours.
Construct a 90% Confidence Interval for the mean time spent on
paperwork by all managers.
State the meaning of the interval in the context of the
problem.
Use the given data to construct a confidence interval at the
requested level:
x = 125, n = 317, confidence level 95% (Hint: Refer...
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(1 point) A study of the career paths of hotel general managers sent questionnaires to an SRS of 210 hotels belonging to major U.S. hotel chains. There were 96 responses. The average time these 96 general managers had spent with their current company was 12.98 years. Take it as known that the standard deviation of time with the company for all general managers is 4.3 years. Give your answers to at least 2 decimal places, and use at least 3...
10. 0/10 points Previous Answers YMSStat2 10..013. My A study of the career paths of otel general managers sent questionnaires to an SRS of 160 hotels belonging to major U.S. hotel chains. There were 109 responses. The average time these 109 general managers had spent with their current company was 11.5 years. How large a sample of hotel managers would be needed to estimate the mean within 1.08 year with 80% confidence? (Take it as known that the standard deviation...
Entered Answer Preview Result Message -2009.11, 2009.11 -2009.11, 2009.11 incorrect Your answer isn't a number (it looks like a list of numbers) 41686.9 41686.9 correct 45705.1 45705.1 correct At least one of the answers above is NOT correct. (1 point) Starting salaries of 95 college graduates who have taken a statistics course have a mean of $43,696. Suppose the distribution of this population is normal and has a standard deviation of $10,819. Using a 93% confidence level, find both of...
IX 3 In a certain management study, 15 randomly selected managers were found to spend a mean of 2.40 hours each day on paperwork with a standard deviation of 1.30 hours. a. Construct a 90% Confidence Interval for the mean time spent on paperwork by all managers. b. State the meaning of the interval in the context of the problem. X Use the given data to construct a confidence interval at the requested level: x = 125, n = 317,...
In a certain management study, 15 randomly selected managers
were
found to spend a mean of 2.40 hours each day on paperwork with a
standard deviation of 1.30 hours.
Construct a 90% Confidence Interval for the mean time spent on
paperwork by all managers.
State the meaning of the interval in the context of the
problem.
Use the given data to construct a confidence interval at the
requested level:
x = 125, n = 317, confidence level 95% (Hint: Refer...
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